Home / 57,439.50-86,154.27-19,989.90

Finding the Fourth Proportional to 57,439.50, 86,154.27 and 19,989.90

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Solution

The fourth proportional to 57,439.50, 86,154.27 and 19,989.90 is: 29,983.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,439.50 : 86,154.27 = 19,989.90 : x
  2. Step 2: Convert to fraction form
    57,439.50/86,154.27 = 19,989.90/x
  3. Step 3: Cross multiply
    57,439.50x = 86,154.27 × 19,989.90
  4. Step 4: Simplify right side
    57,439.50x = 1,722,215,241.87
  5. Step 5: Solve for x
    x = 1,722,215,241.87/57,439.50
  6. Step 6: Final answer
    x = 29,983.12

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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.