Home / 81,853.44-122,780.16-54,144.96

Finding the Fourth Proportional to 81,853.44, 122,780.16 and 54,144.96

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Solution

The fourth proportional to 81,853.44, 122,780.16 and 54,144.96 is: 81,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,853.44 : 122,780.16 = 54,144.96 : x
  2. Step 2: Convert to fraction form
    81,853.44/122,780.16 = 54,144.96/x
  3. Step 3: Cross multiply
    81,853.44x = 122,780.16 × 54,144.96
  4. Step 4: Simplify right side
    81,853.44x = 6,647,926,851.99
  5. Step 5: Solve for x
    x = 6,647,926,851.99/81,853.44
  6. Step 6: Final answer
    x = 81,217.44

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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.