Finding the Fourth Proportional to 99,862.72, 137,809.84 and 54,540.70
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Solution
The fourth proportional to 99,862.72, 137,809.84 and 54,540.70 is: 75,265.78
Step by Step Solution
- Step 1: Write the proportion equation
99,862.72 : 137,809.84 = 54,540.70 : x - Step 2: Convert to fraction form
99,862.72/137,809.84 = 54,540.70/x - Step 3: Cross multiply
99,862.72x = 137,809.84 × 54,540.70 - Step 4: Simplify right side
99,862.72x = 7,516,245,140.49 - Step 5: Solve for x
x = 7,516,245,140.49/99,862.72 - Step 6: Final answer
x = 75,265.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.