Finding the Fourth Proportional to 83,663,733.20, 125,747,542.20 and 72,578,267.60
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Solution
The fourth proportional to 83,663,733.20, 125,747,542.20 and 72,578,267.60 is: 109,085,961.37
Step by Step Solution
- Step 1: Write the proportion equation
83,663,733.20 : 125,747,542.20 = 72,578,267.60 : x - Step 2: Convert to fraction form
83,663,733.20/125,747,542.20 = 72,578,267.60/x - Step 3: Cross multiply
83,663,733.20x = 125,747,542.20 × 72,578,267.60 - Step 4: Simplify right side
83,663,733.20x = 9,126,538,767,833,892 - Step 5: Solve for x
x = 9,126,538,767,833,892/83,663,733.20 - Step 6: Final answer
x = 109,085,961.37
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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.