Home / 81,988.55-122,704.83-50,418.44

Finding the Fourth Proportional to 81,988.55, 122,704.83 and 50,418.44

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Solution

The fourth proportional to 81,988.55, 122,704.83 and 50,418.44 is: 75,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,988.55 : 122,704.83 = 50,418.44 : x
  2. Step 2: Convert to fraction form
    81,988.55/122,704.83 = 50,418.44/x
  3. Step 3: Cross multiply
    81,988.55x = 122,704.83 × 50,418.44
  4. Step 4: Simplify right side
    81,988.55x = 6,186,586,109.07
  5. Step 5: Solve for x
    x = 6,186,586,109.07/81,988.55
  6. Step 6: Final answer
    x = 75,456.71

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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.