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Finding the Fourth Proportional to 40,393.75, 55,747.70 and 23,640.79

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Solution

The fourth proportional to 40,393.75, 55,747.70 and 23,640.79 is: 32,626.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,393.75 : 55,747.70 = 23,640.79 : x
  2. Step 2: Convert to fraction form
    40,393.75/55,747.70 = 23,640.79/x
  3. Step 3: Cross multiply
    40,393.75x = 55,747.70 × 23,640.79
  4. Step 4: Simplify right side
    40,393.75x = 1,317,919,668.68
  5. Step 5: Solve for x
    x = 1,317,919,668.68/40,393.75
  6. Step 6: Final answer
    x = 32,626.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.