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Finding the Fourth Proportional to 66,914.57, 100,371.94 and 20,167.45

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Solution

The fourth proportional to 66,914.57, 100,371.94 and 20,167.45 is: 30,251.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,914.57 : 100,371.94 = 20,167.45 : x
  2. Step 2: Convert to fraction form
    66,914.57/100,371.94 = 20,167.45/x
  3. Step 3: Cross multiply
    66,914.57x = 100,371.94 × 20,167.45
  4. Step 4: Simplify right side
    66,914.57x = 2,024,245,780.00
  5. Step 5: Solve for x
    x = 2,024,245,780.00/66,914.57
  6. Step 6: Final answer
    x = 30,251.19

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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.