Finding the Fourth Proportional to 88,472,331.99, 122,144,195.88 and 78,655,661.73
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Solution
The fourth proportional to 88,472,331.99, 122,144,195.88 and 78,655,661.73 is: 108,591,379.22
Step by Step Solution
- Step 1: Write the proportion equation
88,472,331.99 : 122,144,195.88 = 78,655,661.73 : x - Step 2: Convert to fraction form
88,472,331.99/122,144,195.88 = 78,655,661.73/x - Step 3: Cross multiply
88,472,331.99x = 122,144,195.88 × 78,655,661.73 - Step 4: Simplify right side
88,472,331.99x = 9,607,332,553,420,140 - Step 5: Solve for x
x = 9,607,332,553,420,140/88,472,331.99 - Step 6: Final answer
x = 108,591,379.22
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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.