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Finding the Fourth Proportional to 58,439.52, 87,651 and 18,997.20

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Solution

The fourth proportional to 58,439.52, 87,651 and 18,997.20 is: 28,493.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,439.52 : 87,651 = 18,997.20 : x
  2. Step 2: Convert to fraction form
    58,439.52/87,651 = 18,997.20/x
  3. Step 3: Cross multiply
    58,439.52x = 87,651 × 18,997.20
  4. Step 4: Simplify right side
    58,439.52x = 1,665,123,577.20
  5. Step 5: Solve for x
    x = 1,665,123,577.20/58,439.52
  6. Step 6: Final answer
    x = 28,493.11

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1.5x scale

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.