Finding the Fourth Proportional to 86,463.99, 129,528.18 and 56,791.80
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Solution
The fourth proportional to 86,463.99, 129,528.18 and 56,791.80 is: 85,077.48
Step by Step Solution
- Step 1: Write the proportion equation
86,463.99 : 129,528.18 = 56,791.80 : x - Step 2: Convert to fraction form
86,463.99/129,528.18 = 56,791.80/x - Step 3: Cross multiply
86,463.99x = 129,528.18 × 56,791.80 - Step 4: Simplify right side
86,463.99x = 7,356,138,492.92 - Step 5: Solve for x
x = 7,356,138,492.92/86,463.99 - Step 6: Final answer
x = 85,077.48
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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.