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Finding the Fourth Proportional to 87,956.34, 131,921.74 and 28,794.34

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Solution

The fourth proportional to 87,956.34, 131,921.74 and 28,794.34 is: 43,187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,956.34 : 131,921.74 = 28,794.34 : x
  2. Step 2: Convert to fraction form
    87,956.34/131,921.74 = 28,794.34/x
  3. Step 3: Cross multiply
    87,956.34x = 131,921.74 × 28,794.34
  4. Step 4: Simplify right side
    87,956.34x = 3,798,599,434.95
  5. Step 5: Solve for x
    x = 3,798,599,434.95/87,956.34
  6. Step 6: Final answer
    x = 43,187.33

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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.