Well, I think that they said that 87K is the median for 60-62 year olds "with a 401K type account at their jobs". So, they've saved a bit...implying that they have something to save. And, some of these boomers have been with the same company for 30 years (the end of this dying breed)....and so, just with time and raises, they've had time get their salaries up to that level.
Also, just to show people that *even* in this ugly scenario painted here....where you hit 65 years old with just 150K in your 401K. You hear all of the time that "you may need to work a few more years".
So, let's say, worse case....you're 65 and you're in this boat. You start receiving social security, and so that helps. You cut back and work part time. If you can just keep from touching that nest egg, add $5,000 a year and earn 8%. In five years, that 150K.....will be 597K.
Of course, you'd like to hit this point in your 40s, and not your mid 60s. And letting it go until the very end, well, you are much more vulnerable to market conditions. For instance, you wouldn't want to be that 65 year old needing that extra 5 years of growth ...starting in say......late 2007. You get my drift. You'll be working until you die.
Still, even in that instance....it doesn't have to be the end of the world.
If you hit 150K in your 401K by age 45, add that 5,000 a year for the next 20 years....at 8%, you have 3.8 million. You only get 7%....3.3 million. So, I rest my case.
About the last part - I question your math. Below is an excel of $150,000 start with 5,000 annual contribution at 8% interest. The ending figure at 20 years is just shy of $1,000,000.
Year Principal Contribution interest 8% new balance
1 $150,000.00 $5,000.00 $12,400.00 $167,400.00
2 $167,400.00 $5,000.00 $13,792.00 $186,192.00
3 $186,192.00 $5,000.00 $15,295.36 $206,487.36
4 $206,487.36 $5,000.00 $16,918.99 $228,406.35
5 $228,406.35 $5,000.00 $18,672.51 $252,078.86
6 $252,078.86 $5,000.00 $20,566.31 $277,645.17
7 $277,645.17 $5,000.00 $22,611.61 $305,256.78
8 $305,256.78 $5,000.00 $24,820.54 $335,077.32
9 $335,077.32 $5,000.00 $27,206.19 $367,283.51
10 $367,283.51 $5,000.00 $29,782.68 $402,066.19
11 $402,066.19 $5,000.00 $32,565.29 $439,631.48
12 $439,631.48 $5,000.00 $35,570.52 $480,202.00
13 $480,202.00 $5,000.00 $38,816.16 $524,018.16
14 $524,018.16 $5,000.00 $42,321.45 $571,339.61
15 $571,339.61 $5,000.00 $46,107.17 $622,446.78
16 $622,446.78 $5,000.00 $50,195.74 $677,642.52
17 $677,642.52 $5,000.00 $54,611.40 $737,253.93
18 $737,253.93 $5,000.00 $59,380.31 $801,634.24
19 $801,634.24 $5,000.00 $64,530.74 $871,164.98
20 $871,164.98 $5,000.00 $70,093.20 $946,258.18
A $50,000 annual contribution would get you $3 million, but very few people can sock away that much in any investment instrument