Finding the Fourth Proportional to 81,007.56, 121,534.25 and 27,711.08
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Solution
The fourth proportional to 81,007.56, 121,534.25 and 27,711.08 is: 41,574.46
Step by Step Solution
- Step 1: Write the proportion equation
81,007.56 : 121,534.25 = 27,711.08 : x - Step 2: Convert to fraction form
81,007.56/121,534.25 = 27,711.08/x - Step 3: Cross multiply
81,007.56x = 121,534.25 × 27,711.08 - Step 4: Simplify right side
81,007.56x = 3,367,845,489.77 - Step 5: Solve for x
x = 3,367,845,489.77/81,007.56 - Step 6: Final answer
x = 41,574.46
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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.