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Finding the Fourth Proportional to 57,759.88, 86,650.62 and 18,306.40

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Solution

The fourth proportional to 57,759.88, 86,650.62 and 18,306.40 is: 27,463.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,759.88 : 86,650.62 = 18,306.40 : x
  2. Step 2: Convert to fraction form
    57,759.88/86,650.62 = 18,306.40/x
  3. Step 3: Cross multiply
    57,759.88x = 86,650.62 × 18,306.40
  4. Step 4: Simplify right side
    57,759.88x = 1,586,260,909.97
  5. Step 5: Solve for x
    x = 1,586,260,909.97/57,759.88
  6. Step 6: Final answer
    x = 27,463.02

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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.