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Finding the Fourth Proportional to 87,955.34, 131,920.25 and 28,793.34

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Solution

The fourth proportional to 87,955.34, 131,920.25 and 28,793.34 is: 43,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,955.34 : 131,920.25 = 28,793.34 : x
  2. Step 2: Convert to fraction form
    87,955.34/131,920.25 = 28,793.34/x
  3. Step 3: Cross multiply
    87,955.34x = 131,920.25 × 28,793.34
  4. Step 4: Simplify right side
    87,955.34x = 3,798,424,467.17
  5. Step 5: Solve for x
    x = 3,798,424,467.17/87,955.34
  6. Step 6: Final answer
    x = 43,185.83

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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.