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Finding the Fourth Proportional to 79,857.92, 110,189.44 and 49,651.20

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Solution

The fourth proportional to 79,857.92, 110,189.44 and 49,651.20 is: 68,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,857.92 : 110,189.44 = 49,651.20 : x
  2. Step 2: Convert to fraction form
    79,857.92/110,189.44 = 49,651.20/x
  3. Step 3: Cross multiply
    79,857.92x = 110,189.44 × 49,651.20
  4. Step 4: Simplify right side
    79,857.92x = 5,471,037,923.33
  5. Step 5: Solve for x
    x = 5,471,037,923.33/79,857.92
  6. Step 6: Final answer
    x = 68,509.65

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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.