Finding the Fourth Proportional to 77,190,034.99, 106,523,771.81 and 42,382,420.96
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Solution
The fourth proportional to 77,190,034.99, 106,523,771.81 and 42,382,420.96 is: 58,488,577.44
Step by Step Solution
- Step 1: Write the proportion equation
77,190,034.99 : 106,523,771.81 = 42,382,420.96 : x - Step 2: Convert to fraction form
77,190,034.99/106,523,771.81 = 42,382,420.96/x - Step 3: Cross multiply
77,190,034.99x = 106,523,771.81 × 42,382,420.96 - Step 4: Simplify right side
77,190,034.99x = 4,514,735,339,098,401 - Step 5: Solve for x
x = 4,514,735,339,098,401/77,190,034.99 - Step 6: Final answer
x = 58,488,577.44
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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.