Finding the Fourth Proportional to 87,426.70, 131,107.92 and 31,251.65
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Solution
The fourth proportional to 87,426.70, 131,107.92 and 31,251.65 is: 46,865.99
Step by Step Solution
- Step 1: Write the proportion equation
87,426.70 : 131,107.92 = 31,251.65 : x - Step 2: Convert to fraction form
87,426.70/131,107.92 = 31,251.65/x - Step 3: Cross multiply
87,426.70x = 131,107.92 × 31,251.65 - Step 4: Simplify right side
87,426.70x = 4,097,338,828.07 - Step 5: Solve for x
x = 4,097,338,828.07/87,426.70 - Step 6: Final answer
x = 46,865.99
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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.