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Finding the Fourth Proportional to 66,901.60, 100,352.48 and 20,167.84

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Solution

The fourth proportional to 66,901.60, 100,352.48 and 20,167.84 is: 30,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,901.60 : 100,352.48 = 20,167.84 : x
  2. Step 2: Convert to fraction form
    66,901.60/100,352.48 = 20,167.84/x
  3. Step 3: Cross multiply
    66,901.60x = 100,352.48 × 20,167.84
  4. Step 4: Simplify right side
    66,901.60x = 2,023,892,760.24
  5. Step 5: Solve for x
    x = 2,023,892,760.24/66,901.60
  6. Step 6: Final answer
    x = 30,251.78

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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.