Finding the Fourth Proportional to 86,508,001.80, 129,762,002.70 and 76,430,305.80
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Solution
The fourth proportional to 86,508,001.80, 129,762,002.70 and 76,430,305.80 is: 114,645,458.70
Step by Step Solution
- Step 1: Write the proportion equation
86,508,001.80 : 129,762,002.70 = 76,430,305.80 : x - Step 2: Convert to fraction form
86,508,001.80/129,762,002.70 = 76,430,305.80/x - Step 3: Cross multiply
86,508,001.80x = 129,762,002.70 × 76,430,305.80 - Step 4: Simplify right side
86,508,001.80x = 9,917,749,547,581,426 - Step 5: Solve for x
x = 9,917,749,547,581,426/86,508,001.80 - Step 6: Final answer
x = 114,645,458.70
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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.