Home / 87,839.52-131,772-28,662.88

Finding the Fourth Proportional to 87,839.52, 131,772 and 28,662.88

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Solution

The fourth proportional to 87,839.52, 131,772 and 28,662.88 is: 42,998.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,839.52 : 131,772 = 28,662.88 : x
  2. Step 2: Convert to fraction form
    87,839.52/131,772 = 28,662.88/x
  3. Step 3: Cross multiply
    87,839.52x = 131,772 × 28,662.88
  4. Step 4: Simplify right side
    87,839.52x = 3,776,965,023.36
  5. Step 5: Solve for x
    x = 3,776,965,023.36/87,839.52
  6. Step 6: Final answer
    x = 42,998.47

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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.