Finding the Fourth Proportional to 75,841.70, 113,856.15 and 47,761.70
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Solution
The fourth proportional to 75,841.70, 113,856.15 and 47,761.70 is: 71,701.50
Step by Step Solution
- Step 1: Write the proportion equation
75,841.70 : 113,856.15 = 47,761.70 : x - Step 2: Convert to fraction form
75,841.70/113,856.15 = 47,761.70/x - Step 3: Cross multiply
75,841.70x = 113,856.15 × 47,761.70 - Step 4: Simplify right side
75,841.70x = 5,437,963,279.46 - Step 5: Solve for x
x = 5,437,963,279.46/75,841.70 - Step 6: Final answer
x = 71,701.50
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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.