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Finding the Fourth Proportional to 79,605.80, 109,854.78 and 43,793.60

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Solution

The fourth proportional to 79,605.80, 109,854.78 and 43,793.60 is: 60,434.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,605.80 : 109,854.78 = 43,793.60 : x
  2. Step 2: Convert to fraction form
    79,605.80/109,854.78 = 43,793.60/x
  3. Step 3: Cross multiply
    79,605.80x = 109,854.78 × 43,793.60
  4. Step 4: Simplify right side
    79,605.80x = 4,810,936,293.41
  5. Step 5: Solve for x
    x = 4,810,936,293.41/79,605.80
  6. Step 6: Final answer
    x = 60,434.49

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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.