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Finding the Fourth Proportional to 66,904.28, 100,359.42 and 27,433.64

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Solution

The fourth proportional to 66,904.28, 100,359.42 and 27,433.64 is: 41,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,904.28 : 100,359.42 = 27,433.64 : x
  2. Step 2: Convert to fraction form
    66,904.28/100,359.42 = 27,433.64/x
  3. Step 3: Cross multiply
    66,904.28x = 100,359.42 × 27,433.64
  4. Step 4: Simplify right side
    66,904.28x = 2,753,224,198.89
  5. Step 5: Solve for x
    x = 2,753,224,198.89/66,904.28
  6. Step 6: Final answer
    x = 41,151.69

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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.