Home / 81,789.56-122,684.38-25,634.03

Finding the Fourth Proportional to 81,789.56, 122,684.38 and 25,634.03

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Solution

The fourth proportional to 81,789.56, 122,684.38 and 25,634.03 is: 38,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.56 : 122,684.38 = 25,634.03 : x
  2. Step 2: Convert to fraction form
    81,789.56/122,684.38 = 25,634.03/x
  3. Step 3: Cross multiply
    81,789.56x = 122,684.38 × 25,634.03
  4. Step 4: Simplify right side
    81,789.56x = 3,144,894,940.70
  5. Step 5: Solve for x
    x = 3,144,894,940.70/81,789.56
  6. Step 6: Final answer
    x = 38,451.05

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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.