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Finding the Fourth Proportional to 79,605.60, 109,791.28 and 49,369.92

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Solution

The fourth proportional to 79,605.60, 109,791.28 and 49,369.92 is: 68,090.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,605.60 : 109,791.28 = 49,369.92 : x
  2. Step 2: Convert to fraction form
    79,605.60/109,791.28 = 49,369.92/x
  3. Step 3: Cross multiply
    79,605.60x = 109,791.28 × 49,369.92
  4. Step 4: Simplify right side
    79,605.60x = 5,420,386,710.30
  5. Step 5: Solve for x
    x = 5,420,386,710.30/79,605.60
  6. Step 6: Final answer
    x = 68,090.52

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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.