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Finding the Fourth Proportional to 66,917.52, 100,391.13 and 20,167.02

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Solution

The fourth proportional to 66,917.52, 100,391.13 and 20,167.02 is: 30,255.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.52 : 100,391.13 = 20,167.02 : x
  2. Step 2: Convert to fraction form
    66,917.52/100,391.13 = 20,167.02/x
  3. Step 3: Cross multiply
    66,917.52x = 100,391.13 × 20,167.02
  4. Step 4: Simplify right side
    66,917.52x = 2,024,589,926.53
  5. Step 5: Solve for x
    x = 2,024,589,926.53/66,917.52
  6. Step 6: Final answer
    x = 30,255.01

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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.