Reports indicate that the average 401(k) balance for retirees may be insufficient for retirement. The average and median 401(k) balances are reported to be significantly different, with one outlet stating the average is $168,000 and the median is $48,000. The adequacy of 401(k) savings varies by age, with some outlets comparing balances for individuals in their 30s, 59, and 76, although the specific numbers and trends are not consistently reported across sources.