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Finding the Fourth Proportional to 79,291.80, 109,480.06 and 51,046.68

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Solution

The fourth proportional to 79,291.80, 109,480.06 and 51,046.68 is: 70,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291.80 : 109,480.06 = 51,046.68 : x
  2. Step 2: Convert to fraction form
    79,291.80/109,480.06 = 51,046.68/x
  3. Step 3: Cross multiply
    79,291.80x = 109,480.06 × 51,046.68
  4. Step 4: Simplify right side
    79,291.80x = 5,588,593,589.20
  5. Step 5: Solve for x
    x = 5,588,593,589.20/79,291.80
  6. Step 6: Final answer
    x = 70,481.36

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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.