Home / 80,968.52-111,781.73-56,843.53

Finding the Fourth Proportional to 80,968.52, 111,781.73 and 56,843.53

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Solution

The fourth proportional to 80,968.52, 111,781.73 and 56,843.53 is: 78,475.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,968.52 : 111,781.73 = 56,843.53 : x
  2. Step 2: Convert to fraction form
    80,968.52/111,781.73 = 56,843.53/x
  3. Step 3: Cross multiply
    80,968.52x = 111,781.73 × 56,843.53
  4. Step 4: Simplify right side
    80,968.52x = 6,354,067,985.36
  5. Step 5: Solve for x
    x = 6,354,067,985.36/80,968.52
  6. Step 6: Final answer
    x = 78,475.78

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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.