Home / 42,136.62-63,216.54-18,439.86

Finding the Fourth Proportional to 42,136.62, 63,216.54 and 18,439.86

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Solution

The fourth proportional to 42,136.62, 63,216.54 and 18,439.86 is: 27,664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,136.62 : 63,216.54 = 18,439.86 : x
  2. Step 2: Convert to fraction form
    42,136.62/63,216.54 = 18,439.86/x
  3. Step 3: Cross multiply
    42,136.62x = 63,216.54 × 18,439.86
  4. Step 4: Simplify right side
    42,136.62x = 1,165,704,147.28
  5. Step 5: Solve for x
    x = 1,165,704,147.28/42,136.62
  6. Step 6: Final answer
    x = 27,664.87

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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.