Finding the Fourth Proportional to 86,274.24, 129,432.84 and 68,571.69
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Solution
The fourth proportional to 86,274.24, 129,432.84 and 68,571.69 is: 102,874.61
Step by Step Solution
- Step 1: Write the proportion equation
86,274.24 : 129,432.84 = 68,571.69 : x - Step 2: Convert to fraction form
86,274.24/129,432.84 = 68,571.69/x - Step 3: Cross multiply
86,274.24x = 129,432.84 × 68,571.69 - Step 4: Simplify right side
86,274.24x = 8,875,428,580.30 - Step 5: Solve for x
x = 8,875,428,580.30/86,274.24 - Step 6: Final answer
x = 102,874.61
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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.