Finding the Fourth Proportional to 81,135.38, 121,597.05 and 58,721.53
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Solution
The fourth proportional to 81,135.38, 121,597.05 and 58,721.53 is: 88,005.56
Step by Step Solution
- Step 1: Write the proportion equation
81,135.38 : 121,597.05 = 58,721.53 : x - Step 2: Convert to fraction form
81,135.38/121,597.05 = 58,721.53/x - Step 3: Cross multiply
81,135.38x = 121,597.05 × 58,721.53 - Step 4: Simplify right side
81,135.38x = 7,140,364,975.38 - Step 5: Solve for x
x = 7,140,364,975.38/81,135.38 - Step 6: Final answer
x = 88,005.56
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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.