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Finding the Fourth Proportional to 33,279.60, 49,919.40 and 21,469.80

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Solution

The fourth proportional to 33,279.60, 49,919.40 and 21,469.80 is: 32,204.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,279.60 : 49,919.40 = 21,469.80 : x
  2. Step 2: Convert to fraction form
    33,279.60/49,919.40 = 21,469.80/x
  3. Step 3: Cross multiply
    33,279.60x = 49,919.40 × 21,469.80
  4. Step 4: Simplify right side
    33,279.60x = 1,071,759,534.12
  5. Step 5: Solve for x
    x = 1,071,759,534.12/33,279.60
  6. Step 6: Final answer
    x = 32,204.70

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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.