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Finding the Fourth Proportional to 66,815.54, 100,223.22 and 27,372.72

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Solution

The fourth proportional to 66,815.54, 100,223.22 and 27,372.72 is: 41,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,815.54 : 100,223.22 = 27,372.72 : x
  2. Step 2: Convert to fraction form
    66,815.54/100,223.22 = 27,372.72/x
  3. Step 3: Cross multiply
    66,815.54x = 100,223.22 × 27,372.72
  4. Step 4: Simplify right side
    66,815.54x = 2,743,382,138.56
  5. Step 5: Solve for x
    x = 2,743,382,138.56/66,815.54
  6. Step 6: Final answer
    x = 41,059.04

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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.