Finding the Fourth Proportional to 77,006,313.12, 115,431,747.34 and 48,272,628.68
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Solution
The fourth proportional to 77,006,313.12, 115,431,747.34 and 48,272,628.68 is: 72,360,221.54
Step by Step Solution
- Step 1: Write the proportion equation
77,006,313.12 : 115,431,747.34 = 48,272,628.68 : x - Step 2: Convert to fraction form
77,006,313.12/115,431,747.34 = 48,272,628.68/x - Step 3: Cross multiply
77,006,313.12x = 115,431,747.34 × 48,272,628.68 - Step 4: Simplify right side
77,006,313.12x = 5,572,193,877,227,398 - Step 5: Solve for x
x = 5,572,193,877,227,398/77,006,313.12 - Step 6: Final answer
x = 72,360,221.54
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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.