Finding the Fourth Proportional to 87,057.40, 130,578.84 and 61,651.88
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Solution
The fourth proportional to 87,057.40, 130,578.84 and 61,651.88 is: 92,472.68
Step by Step Solution
- Step 1: Write the proportion equation
87,057.40 : 130,578.84 = 61,651.88 : x - Step 2: Convert to fraction form
87,057.40/130,578.84 = 61,651.88/x - Step 3: Cross multiply
87,057.40x = 130,578.84 × 61,651.88 - Step 4: Simplify right side
87,057.40x = 8,050,430,974.22 - Step 5: Solve for x
x = 8,050,430,974.22/87,057.40 - Step 6: Final answer
x = 92,472.68
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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.