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Finding the Fourth Proportional to 87,874.56, 131,828.85 and 28,694.34

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Solution

The fourth proportional to 87,874.56, 131,828.85 and 28,694.34 is: 43,047.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,874.56 : 131,828.85 = 28,694.34 : x
  2. Step 2: Convert to fraction form
    87,874.56/131,828.85 = 28,694.34/x
  3. Step 3: Cross multiply
    87,874.56x = 131,828.85 × 28,694.34
  4. Step 4: Simplify right side
    87,874.56x = 3,782,741,843.71
  5. Step 5: Solve for x
    x = 3,782,741,843.71/87,874.56
  6. Step 6: Final answer
    x = 43,047.06

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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.