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Finding the Fourth Proportional to 69,427, 104,145.36 and 27,874

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Solution

The fourth proportional to 69,427, 104,145.36 and 27,874 is: 41,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,427 : 104,145.36 = 27,874 : x
  2. Step 2: Convert to fraction form
    69,427/104,145.36 = 27,874/x
  3. Step 3: Cross multiply
    69,427x = 104,145.36 × 27,874
  4. Step 4: Simplify right side
    69,427x = 2,902,947,764.64
  5. Step 5: Solve for x
    x = 2,902,947,764.64/69,427
  6. Step 6: Final answer
    x = 41,812.95

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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.