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Finding the Fourth Proportional to 74,546.74, 111,781.80 and 21,949.39

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Solution

The fourth proportional to 74,546.74, 111,781.80 and 21,949.39 is: 32,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,546.74 : 111,781.80 = 21,949.39 : x
  2. Step 2: Convert to fraction form
    74,546.74/111,781.80 = 21,949.39/x
  3. Step 3: Cross multiply
    74,546.74x = 111,781.80 × 21,949.39
  4. Step 4: Simplify right side
    74,546.74x = 2,453,542,043.65
  5. Step 5: Solve for x
    x = 2,453,542,043.65/74,546.74
  6. Step 6: Final answer
    x = 32,912.80

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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.