Finding the Fourth Proportional to 81,125.19, 121,691.13 and 27,853.75
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Solution
The fourth proportional to 81,125.19, 121,691.13 and 27,853.75 is: 41,781.77
Step by Step Solution
- Step 1: Write the proportion equation
81,125.19 : 121,691.13 = 27,853.75 : x - Step 2: Convert to fraction form
81,125.19/121,691.13 = 27,853.75/x - Step 3: Cross multiply
81,125.19x = 121,691.13 × 27,853.75 - Step 4: Simplify right side
81,125.19x = 3,389,554,172.97 - Step 5: Solve for x
x = 3,389,554,172.97/81,125.19 - Step 6: Final answer
x = 41,781.77
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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.