Finding the Fourth Proportional to 87,451.66, 131,205.05 and 66,491.99
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Solution
The fourth proportional to 87,451.66, 131,205.05 and 66,491.99 is: 99,758.95
Step by Step Solution
- Step 1: Write the proportion equation
87,451.66 : 131,205.05 = 66,491.99 : x - Step 2: Convert to fraction form
87,451.66/131,205.05 = 66,491.99/x - Step 3: Cross multiply
87,451.66x = 131,205.05 × 66,491.99 - Step 4: Simplify right side
87,451.66x = 8,724,085,366.79 - Step 5: Solve for x
x = 8,724,085,366.79/87,451.66 - Step 6: Final answer
x = 99,758.95
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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.