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Finding the Fourth Proportional to 57,862.92, 86,793.42 and 18,419.46

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Solution

The fourth proportional to 57,862.92, 86,793.42 and 18,419.46 is: 27,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,862.92 : 86,793.42 = 18,419.46 : x
  2. Step 2: Convert to fraction form
    57,862.92/86,793.42 = 18,419.46/x
  3. Step 3: Cross multiply
    57,862.92x = 86,793.42 × 18,419.46
  4. Step 4: Simplify right side
    57,862.92x = 1,598,687,927.95
  5. Step 5: Solve for x
    x = 1,598,687,927.95/57,862.92
  6. Step 6: Final answer
    x = 27,628.88

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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.