Home / 81,788.85-122,684.13-29,198.79

Finding the Fourth Proportional to 81,788.85, 122,684.13 and 29,198.79

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Solution

The fourth proportional to 81,788.85, 122,684.13 and 29,198.79 is: 43,798.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.85 : 122,684.13 = 29,198.79 : x
  2. Step 2: Convert to fraction form
    81,788.85/122,684.13 = 29,198.79/x
  3. Step 3: Cross multiply
    81,788.85x = 122,684.13 × 29,198.79
  4. Step 4: Simplify right side
    81,788.85x = 3,582,228,148.20
  5. Step 5: Solve for x
    x = 3,582,228,148.20/81,788.85
  6. Step 6: Final answer
    x = 43,798.49

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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.