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Finding the Fourth Proportional to 57,789.68, 86,687.52 and 18,349.88

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Solution

The fourth proportional to 57,789.68, 86,687.52 and 18,349.88 is: 27,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,789.68 : 86,687.52 = 18,349.88 : x
  2. Step 2: Convert to fraction form
    57,789.68/86,687.52 = 18,349.88/x
  3. Step 3: Cross multiply
    57,789.68x = 86,687.52 × 18,349.88
  4. Step 4: Simplify right side
    57,789.68x = 1,590,705,589.50
  5. Step 5: Solve for x
    x = 1,590,705,589.50/57,789.68
  6. Step 6: Final answer
    x = 27,525.77

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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.