Finding the Fourth Proportional to 86,206,830.30, 129,310,245.45 and 76,853,468.70
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Solution
The fourth proportional to 86,206,830.30, 129,310,245.45 and 76,853,468.70 is: 115,280,203.05
Step by Step Solution
- Step 1: Write the proportion equation
86,206,830.30 : 129,310,245.45 = 76,853,468.70 : x - Step 2: Convert to fraction form
86,206,830.30/129,310,245.45 = 76,853,468.70/x - Step 3: Cross multiply
86,206,830.30x = 129,310,245.45 × 76,853,468.70 - Step 4: Simplify right side
86,206,830.30x = 9,937,940,901,280,894 - Step 5: Solve for x
x = 9,937,940,901,280,894/86,206,830.30 - Step 6: Final answer
x = 115,280,203.05
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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.