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Finding the Fourth Proportional to 79,189.30, 118,759.13 and 25,869.13

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Solution

The fourth proportional to 79,189.30, 118,759.13 and 25,869.13 is: 38,795.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,189.30 : 118,759.13 = 25,869.13 : x
  2. Step 2: Convert to fraction form
    79,189.30/118,759.13 = 25,869.13/x
  3. Step 3: Cross multiply
    79,189.30x = 118,759.13 × 25,869.13
  4. Step 4: Simplify right side
    79,189.30x = 3,072,194,778.86
  5. Step 5: Solve for x
    x = 3,072,194,778.86/79,189.30
  6. Step 6: Final answer
    x = 38,795.58

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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.