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Finding the Fourth Proportional to 86,759.92, 130,103.16 and 27,579.70

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Solution

The fourth proportional to 86,759.92, 130,103.16 and 27,579.70 is: 41,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,759.92 : 130,103.16 = 27,579.70 : x
  2. Step 2: Convert to fraction form
    86,759.92/130,103.16 = 27,579.70/x
  3. Step 3: Cross multiply
    86,759.92x = 130,103.16 × 27,579.70
  4. Step 4: Simplify right side
    86,759.92x = 3,588,206,121.85
  5. Step 5: Solve for x
    x = 3,588,206,121.85/86,759.92
  6. Step 6: Final answer
    x = 41,357.88

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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.