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Finding the Fourth Proportional to 66,917.78, 100,401.27 and 27,464.30

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Solution

The fourth proportional to 66,917.78, 100,401.27 and 27,464.30 is: 41,206.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,917.78 : 100,401.27 = 27,464.30 : x
  2. Step 2: Convert to fraction form
    66,917.78/100,401.27 = 27,464.30/x
  3. Step 3: Cross multiply
    66,917.78x = 100,401.27 × 27,464.30
  4. Step 4: Simplify right side
    66,917.78x = 2,757,450,599.66
  5. Step 5: Solve for x
    x = 2,757,450,599.66/66,917.78
  6. Step 6: Final answer
    x = 41,206.55

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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.