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Finding the Fourth Proportional to 66,394.59, 91,626.69 and 36,180.88

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Solution

The fourth proportional to 66,394.59, 91,626.69 and 36,180.88 is: 49,930.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.59 : 91,626.69 = 36,180.88 : x
  2. Step 2: Convert to fraction form
    66,394.59/91,626.69 = 36,180.88/x
  3. Step 3: Cross multiply
    66,394.59x = 91,626.69 × 36,180.88
  4. Step 4: Simplify right side
    66,394.59x = 3,315,134,182.30
  5. Step 5: Solve for x
    x = 3,315,134,182.30/66,394.59
  6. Step 6: Final answer
    x = 49,930.79

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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.