Finding the Fourth Proportional to 91,158,392.12, 125,778,470.82 and 53,970,207.08
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Solution
The fourth proportional to 91,158,392.12, 125,778,470.82 and 53,970,207.08 is: 74,466,979.49
Step by Step Solution
- Step 1: Write the proportion equation
91,158,392.12 : 125,778,470.82 = 53,970,207.08 : x - Step 2: Convert to fraction form
91,158,392.12/125,778,470.82 = 53,970,207.08/x - Step 3: Cross multiply
91,158,392.12x = 125,778,470.82 × 53,970,207.08 - Step 4: Simplify right side
91,158,392.12x = 6,788,290,116,361,137 - Step 5: Solve for x
x = 6,788,290,116,361,137/91,158,392.12 - Step 6: Final answer
x = 74,466,979.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.