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Finding the Fourth Proportional to 67,183.65, 100,771.81 and 20,432.88

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Solution

The fourth proportional to 67,183.65, 100,771.81 and 20,432.88 is: 30,648.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,183.65 : 100,771.81 = 20,432.88 : x
  2. Step 2: Convert to fraction form
    67,183.65/100,771.81 = 20,432.88/x
  3. Step 3: Cross multiply
    67,183.65x = 100,771.81 × 20,432.88
  4. Step 4: Simplify right side
    67,183.65x = 2,059,058,301.11
  5. Step 5: Solve for x
    x = 2,059,058,301.11/67,183.65
  6. Step 6: Final answer
    x = 30,648.21

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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.