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Finding the Fourth Proportional to 57,204.80, 85,807.20 and 17,765.90

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Solution

The fourth proportional to 57,204.80, 85,807.20 and 17,765.90 is: 26,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,204.80 : 85,807.20 = 17,765.90 : x
  2. Step 2: Convert to fraction form
    57,204.80/85,807.20 = 17,765.90/x
  3. Step 3: Cross multiply
    57,204.80x = 85,807.20 × 17,765.90
  4. Step 4: Simplify right side
    57,204.80x = 1,524,442,134.48
  5. Step 5: Solve for x
    x = 1,524,442,134.48/57,204.80
  6. Step 6: Final answer
    x = 26,648.85

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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.