Finding the Fourth Proportional to 77,142.48, 115,691.03 and 32,768.88
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Solution
The fourth proportional to 77,142.48, 115,691.03 and 32,768.88 is: 49,143.68
Step by Step Solution
- Step 1: Write the proportion equation
77,142.48 : 115,691.03 = 32,768.88 : x - Step 2: Convert to fraction form
77,142.48/115,691.03 = 32,768.88/x - Step 3: Cross multiply
77,142.48x = 115,691.03 × 32,768.88 - Step 4: Simplify right side
77,142.48x = 3,791,065,479.15 - Step 5: Solve for x
x = 3,791,065,479.15/77,142.48 - Step 6: Final answer
x = 49,143.68
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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.