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Finding the Fourth Proportional to 74,469.44, 111,704.88 and 21,879.84

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Solution

The fourth proportional to 74,469.44, 111,704.88 and 21,879.84 is: 32,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,469.44 : 111,704.88 = 21,879.84 : x
  2. Step 2: Convert to fraction form
    74,469.44/111,704.88 = 21,879.84/x
  3. Step 3: Cross multiply
    74,469.44x = 111,704.88 × 21,879.84
  4. Step 4: Simplify right side
    74,469.44x = 2,444,084,901.62
  5. Step 5: Solve for x
    x = 2,444,084,901.62/74,469.44
  6. Step 6: Final answer
    x = 32,819.97

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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.