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Finding the Fourth Proportional to 80,791.04, 120,998.44 and 77,988.44

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Solution

The fourth proportional to 80,791.04, 120,998.44 and 77,988.44 is: 116,801.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,791.04 : 120,998.44 = 77,988.44 : x
  2. Step 2: Convert to fraction form
    80,791.04/120,998.44 = 77,988.44/x
  3. Step 3: Cross multiply
    80,791.04x = 120,998.44 × 77,988.44
  4. Step 4: Simplify right side
    80,791.04x = 9,436,479,578.03
  5. Step 5: Solve for x
    x = 9,436,479,578.03/80,791.04
  6. Step 6: Final answer
    x = 116,801.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.