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Finding the Fourth Proportional to 79,166.57, 109,257.65 and 45,180.15

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Solution

The fourth proportional to 79,166.57, 109,257.65 and 45,180.15 is: 62,353.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,166.57 : 109,257.65 = 45,180.15 : x
  2. Step 2: Convert to fraction form
    79,166.57/109,257.65 = 45,180.15/x
  3. Step 3: Cross multiply
    79,166.57x = 109,257.65 × 45,180.15
  4. Step 4: Simplify right side
    79,166.57x = 4,936,277,407.78
  5. Step 5: Solve for x
    x = 4,936,277,407.78/79,166.57
  6. Step 6: Final answer
    x = 62,353.06

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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.