The historical ratio between gold and silver has been 50:1.
Look at it now.
https://www.macrotrends.net/1441/gold-to-silver-ratio
Again - gold and silver are commodities.
Agreed that those commodities have been rising in value but they are not legal tender (not saying they shouldn't be...just stating facts).
Those commodities are bought with dollars and sold with dollars.
Purchasing a commodity at a lower price and selling for a higher price makes a profit - no different than any other market.