Finding the Fourth Proportional to 86,571.64, 129,871.13 and 36,652.05
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Solution
The fourth proportional to 86,571.64, 129,871.13 and 36,652.05 is: 54,983.86
Step by Step Solution
- Step 1: Write the proportion equation
86,571.64 : 129,871.13 = 36,652.05 : x - Step 2: Convert to fraction form
86,571.64/129,871.13 = 36,652.05/x - Step 3: Cross multiply
86,571.64x = 129,871.13 × 36,652.05 - Step 4: Simplify right side
86,571.64x = 4,760,042,967.06 - Step 5: Solve for x
x = 4,760,042,967.06/86,571.64 - Step 6: Final answer
x = 54,983.86
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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.