Finding the Fourth Proportional to 81,107,385.28, 121,668,557.51 and 26,520,250.73
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Solution
The fourth proportional to 81,107,385.28, 121,668,557.51 and 26,520,250.73 is: 39,782,821.75
Step by Step Solution
- Step 1: Write the proportion equation
81,107,385.28 : 121,668,557.51 = 26,520,250.73 : x - Step 2: Convert to fraction form
81,107,385.28/121,668,557.51 = 26,520,250.73/x - Step 3: Cross multiply
81,107,385.28x = 121,668,557.51 × 26,520,250.73 - Step 4: Simplify right side
81,107,385.28x = 3,226,680,651,294,194.50 - Step 5: Solve for x
x = 3,226,680,651,294,194.50/81,107,385.28 - Step 6: Final answer
x = 39,782,821.75
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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.