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Finding the Fourth Proportional to 66,918.34, 100,377.51 and 27,508.60

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Solution

The fourth proportional to 66,918.34, 100,377.51 and 27,508.60 is: 41,262.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,918.34 : 100,377.51 = 27,508.60 : x
  2. Step 2: Convert to fraction form
    66,918.34/100,377.51 = 27,508.60/x
  3. Step 3: Cross multiply
    66,918.34x = 100,377.51 × 27,508.60
  4. Step 4: Simplify right side
    66,918.34x = 2,761,244,771.59
  5. Step 5: Solve for x
    x = 2,761,244,771.59/66,918.34
  6. Step 6: Final answer
    x = 41,262.90

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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.