Finding the Fourth Proportional to 81,008.28, 121,349.62 and 40,359.26
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Solution
The fourth proportional to 81,008.28, 121,349.62 and 40,359.26 is: 60,457.79
Step by Step Solution
- Step 1: Write the proportion equation
81,008.28 : 121,349.62 = 40,359.26 : x - Step 2: Convert to fraction form
81,008.28/121,349.62 = 40,359.26/x - Step 3: Cross multiply
81,008.28x = 121,349.62 × 40,359.26 - Step 4: Simplify right side
81,008.28x = 4,897,581,104.79 - Step 5: Solve for x
x = 4,897,581,104.79/81,008.28 - Step 6: Final answer
x = 60,457.79
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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.