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Finding the Fourth Proportional to 79,114.44, 109,209.42 and 51,900.87

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Solution

The fourth proportional to 79,114.44, 109,209.42 and 51,900.87 is: 71,643.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,114.44 : 109,209.42 = 51,900.87 : x
  2. Step 2: Convert to fraction form
    79,114.44/109,209.42 = 51,900.87/x
  3. Step 3: Cross multiply
    79,114.44x = 109,209.42 × 51,900.87
  4. Step 4: Simplify right side
    79,114.44x = 5,668,063,910.20
  5. Step 5: Solve for x
    x = 5,668,063,910.20/79,114.44
  6. Step 6: Final answer
    x = 71,643.86

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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.