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Finding the Fourth Proportional to 74,469.20, 111,790.20 and 44,920.40

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Solution

The fourth proportional to 74,469.20, 111,790.20 and 44,920.40 is: 67,432.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.20 : 111,790.20 = 44,920.40 : x
  2. Step 2: Convert to fraction form
    74,469.20/111,790.20 = 44,920.40/x
  3. Step 3: Cross multiply
    74,469.20x = 111,790.20 × 44,920.40
  4. Step 4: Simplify right side
    74,469.20x = 5,021,660,500.08
  5. Step 5: Solve for x
    x = 5,021,660,500.08/74,469.20
  6. Step 6: Final answer
    x = 67,432.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.