Finding the Fourth Proportional to 86,274.18, 129,411.36 and 27,115.02
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Solution
The fourth proportional to 86,274.18, 129,411.36 and 27,115.02 is: 40,672.56
Step by Step Solution
- Step 1: Write the proportion equation
86,274.18 : 129,411.36 = 27,115.02 : x - Step 2: Convert to fraction form
86,274.18/129,411.36 = 27,115.02/x - Step 3: Cross multiply
86,274.18x = 129,411.36 × 27,115.02 - Step 4: Simplify right side
86,274.18x = 3,508,991,614.63 - Step 5: Solve for x
x = 3,508,991,614.63/86,274.18 - Step 6: Final answer
x = 40,672.56
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1.5x scale
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.