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Finding the Fourth Proportional to 79,661.12, 109,928.54 and 43,850.38

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Solution

The fourth proportional to 79,661.12, 109,928.54 and 43,850.38 is: 60,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.12 : 109,928.54 = 43,850.38 : x
  2. Step 2: Convert to fraction form
    79,661.12/109,928.54 = 43,850.38/x
  3. Step 3: Cross multiply
    79,661.12x = 109,928.54 × 43,850.38
  4. Step 4: Simplify right side
    79,661.12x = 4,820,408,251.85
  5. Step 5: Solve for x
    x = 4,820,408,251.85/79,661.12
  6. Step 6: Final answer
    x = 60,511.43

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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.