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Finding the Fourth Proportional to 38,371.61, 57,565.65 and 21,739.61

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Solution

The fourth proportional to 38,371.61, 57,565.65 and 21,739.61 is: 32,614.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,371.61 : 57,565.65 = 21,739.61 : x
  2. Step 2: Convert to fraction form
    38,371.61/57,565.65 = 21,739.61/x
  3. Step 3: Cross multiply
    38,371.61x = 57,565.65 × 21,739.61
  4. Step 4: Simplify right side
    38,371.61x = 1,251,454,780.40
  5. Step 5: Solve for x
    x = 1,251,454,780.40/38,371.61
  6. Step 6: Final answer
    x = 32,614.08

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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.