If Wikipedia is to be believed, then “The average gold/silver ratio during the 20th century was 1:47″.

As of today

Gold spot $1,432  :  Silver spot $34 = 42:1.
Not too out of whack.

But what’s really interesting, until mid 19th century (confirmed with sources other than Wiki) the average ratio was 16, which translates into $87.50 silver price today.

Historical gold/silver ratio