Finding the Fourth Proportional to 86,179.68, 129,199.66 and 38,760.05
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Solution
The fourth proportional to 86,179.68, 129,199.66 and 38,760.05 is: 58,108.66
Step by Step Solution
- Step 1: Write the proportion equation
86,179.68 : 129,199.66 = 38,760.05 : x - Step 2: Convert to fraction form
86,179.68/129,199.66 = 38,760.05/x - Step 3: Cross multiply
86,179.68x = 129,199.66 × 38,760.05 - Step 4: Simplify right side
86,179.68x = 5,007,785,507.68 - Step 5: Solve for x
x = 5,007,785,507.68/86,179.68 - Step 6: Final answer
x = 58,108.66
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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.