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Finding the Fourth Proportional to 79,661.82, 109,936.46 and 43,855.16

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Solution

The fourth proportional to 79,661.82, 109,936.46 and 43,855.16 is: 60,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,661.82 : 109,936.46 = 43,855.16 : x
  2. Step 2: Convert to fraction form
    79,661.82/109,936.46 = 43,855.16/x
  3. Step 3: Cross multiply
    79,661.82x = 109,936.46 × 43,855.16
  4. Step 4: Simplify right side
    79,661.82x = 4,821,281,098.70
  5. Step 5: Solve for x
    x = 4,821,281,098.70/79,661.82
  6. Step 6: Final answer
    x = 60,521.85

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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.