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Finding the Fourth Proportional to 66,517.92, 91,794.60 and 38,223.54

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Solution

The fourth proportional to 66,517.92, 91,794.60 and 38,223.54 is: 52,748.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.92 : 91,794.60 = 38,223.54 : x
  2. Step 2: Convert to fraction form
    66,517.92/91,794.60 = 38,223.54/x
  3. Step 3: Cross multiply
    66,517.92x = 91,794.60 × 38,223.54
  4. Step 4: Simplify right side
    66,517.92x = 3,508,714,564.88
  5. Step 5: Solve for x
    x = 3,508,714,564.88/66,517.92
  6. Step 6: Final answer
    x = 52,748.41

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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.