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Finding the Fourth Proportional to 57,565.58, 86,340.81 and 18,122.90

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Solution

The fourth proportional to 57,565.58, 86,340.81 and 18,122.90 is: 27,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,565.58 : 86,340.81 = 18,122.90 : x
  2. Step 2: Convert to fraction form
    57,565.58/86,340.81 = 18,122.90/x
  3. Step 3: Cross multiply
    57,565.58x = 86,340.81 × 18,122.90
  4. Step 4: Simplify right side
    57,565.58x = 1,564,745,865.55
  5. Step 5: Solve for x
    x = 1,564,745,865.55/57,565.58
  6. Step 6: Final answer
    x = 27,181.97

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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.