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Finding the Fourth Proportional to 79,806.78, 119,006.13 and 75,882.48

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Solution

The fourth proportional to 79,806.78, 119,006.13 and 75,882.48 is: 113,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,806.78 : 119,006.13 = 75,882.48 : x
  2. Step 2: Convert to fraction form
    79,806.78/119,006.13 = 75,882.48/x
  3. Step 3: Cross multiply
    79,806.78x = 119,006.13 × 75,882.48
  4. Step 4: Simplify right side
    79,806.78x = 9,030,480,279.60
  5. Step 5: Solve for x
    x = 9,030,480,279.60/79,806.78
  6. Step 6: Final answer
    x = 113,154.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.