Finding the Fourth Proportional to 75,129.92, 103,680.88 and 41,139.84
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Solution
The fourth proportional to 75,129.92, 103,680.88 and 41,139.84 is: 56,773.85
Step by Step Solution
- Step 1: Write the proportion equation
75,129.92 : 103,680.88 = 41,139.84 : x - Step 2: Convert to fraction form
75,129.92/103,680.88 = 41,139.84/x - Step 3: Cross multiply
75,129.92x = 103,680.88 × 41,139.84 - Step 4: Simplify right side
75,129.92x = 4,265,414,814.26 - Step 5: Solve for x
x = 4,265,414,814.26/75,129.92 - Step 6: Final answer
x = 56,773.85
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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.