Finding the Fourth Proportional to 79,938,678.20, 119,719,132.86 and 39,026,135.48
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Solution
The fourth proportional to 79,938,678.20, 119,719,132.86 and 39,026,135.48 is: 58,446,989.66
Step by Step Solution
- Step 1: Write the proportion equation
79,938,678.20 : 119,719,132.86 = 39,026,135.48 : x - Step 2: Convert to fraction form
79,938,678.20/119,719,132.86 = 39,026,135.48/x - Step 3: Cross multiply
79,938,678.20x = 119,719,132.86 × 39,026,135.48 - Step 4: Simplify right side
79,938,678.20x = 4,672,175,098,542,479 - Step 5: Solve for x
x = 4,672,175,098,542,479/79,938,678.20 - Step 6: Final answer
x = 58,446,989.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.