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Finding the Fourth Proportional to 66,914.78, 100,372.10 and 20,167.65

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Solution

The fourth proportional to 66,914.78, 100,372.10 and 20,167.65 is: 30,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,914.78 : 100,372.10 = 20,167.65 : x
  2. Step 2: Convert to fraction form
    66,914.78/100,372.10 = 20,167.65/x
  3. Step 3: Cross multiply
    66,914.78x = 100,372.10 × 20,167.65
  4. Step 4: Simplify right side
    66,914.78x = 2,024,269,281.73
  5. Step 5: Solve for x
    x = 2,024,269,281.73/66,914.78
  6. Step 6: Final answer
    x = 30,251.45

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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.