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Finding the Fourth Proportional to 79,195.82, 109,262.88 and 45,179.78

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Solution

The fourth proportional to 79,195.82, 109,262.88 and 45,179.78 is: 62,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,195.82 : 109,262.88 = 45,179.78 : x
  2. Step 2: Convert to fraction form
    79,195.82/109,262.88 = 45,179.78/x
  3. Step 3: Cross multiply
    79,195.82x = 109,262.88 × 45,179.78
  4. Step 4: Simplify right side
    79,195.82x = 4,936,472,334.25
  5. Step 5: Solve for x
    x = 4,936,472,334.25/79,195.82
  6. Step 6: Final answer
    x = 62,332.49

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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.