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Finding the Fourth Proportional to 66,881.90, 100,371.45 and 27,467.30

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Solution

The fourth proportional to 66,881.90, 100,371.45 and 27,467.30 is: 41,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,881.90 : 100,371.45 = 27,467.30 : x
  2. Step 2: Convert to fraction form
    66,881.90/100,371.45 = 27,467.30/x
  3. Step 3: Cross multiply
    66,881.90x = 100,371.45 × 27,467.30
  4. Step 4: Simplify right side
    66,881.90x = 2,756,932,728.59
  5. Step 5: Solve for x
    x = 2,756,932,728.59/66,881.90
  6. Step 6: Final answer
    x = 41,220.91

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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.