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Finding the Fourth Proportional to 42,565.76, 63,819.02 and 18,860.44

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Solution

The fourth proportional to 42,565.76, 63,819.02 and 18,860.44 is: 28,277.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,565.76 : 63,819.02 = 18,860.44 : x
  2. Step 2: Convert to fraction form
    42,565.76/63,819.02 = 18,860.44/x
  3. Step 3: Cross multiply
    42,565.76x = 63,819.02 × 18,860.44
  4. Step 4: Simplify right side
    42,565.76x = 1,203,654,797.57
  5. Step 5: Solve for x
    x = 1,203,654,797.57/42,565.76
  6. Step 6: Final answer
    x = 28,277.54

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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.