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Finding the Fourth Proportional to 86,912.52, 130,367.70 and 27,747.42

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Solution

The fourth proportional to 86,912.52, 130,367.70 and 27,747.42 is: 41,620.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,912.52 : 130,367.70 = 27,747.42 : x
  2. Step 2: Convert to fraction form
    86,912.52/130,367.70 = 27,747.42/x
  3. Step 3: Cross multiply
    86,912.52x = 130,367.70 × 27,747.42
  4. Step 4: Simplify right side
    86,912.52x = 3,617,367,326.33
  5. Step 5: Solve for x
    x = 3,617,367,326.33/86,912.52
  6. Step 6: Final answer
    x = 41,620.79

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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.