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Finding the Fourth Proportional to 57,855.53, 86,793.02 and 18,424.73

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Solution

The fourth proportional to 57,855.53, 86,793.02 and 18,424.73 is: 27,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,855.53 : 86,793.02 = 18,424.73 : x
  2. Step 2: Convert to fraction form
    57,855.53/86,793.02 = 18,424.73/x
  3. Step 3: Cross multiply
    57,855.53x = 86,793.02 × 18,424.73
  4. Step 4: Simplify right side
    57,855.53x = 1,599,138,153.34
  5. Step 5: Solve for x
    x = 1,599,138,153.34/57,855.53
  6. Step 6: Final answer
    x = 27,640.19

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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.