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Finding the Fourth Proportional to 85,432.76, 128,149.20 and 22,252.73

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Solution

The fourth proportional to 85,432.76, 128,149.20 and 22,252.73 is: 33,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.76 : 128,149.20 = 22,252.73 : x
  2. Step 2: Convert to fraction form
    85,432.76/128,149.20 = 22,252.73/x
  3. Step 3: Cross multiply
    85,432.76x = 128,149.20 × 22,252.73
  4. Step 4: Simplify right side
    85,432.76x = 2,851,668,937.86
  5. Step 5: Solve for x
    x = 2,851,668,937.86/85,432.76
  6. Step 6: Final answer
    x = 33,379.10

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1.5x scale

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.