Home / 81,799.56-122,700.89-25,638.43

Finding the Fourth Proportional to 81,799.56, 122,700.89 and 25,638.43

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Solution

The fourth proportional to 81,799.56, 122,700.89 and 25,638.43 is: 38,458.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,799.56 : 122,700.89 = 25,638.43 : x
  2. Step 2: Convert to fraction form
    81,799.56/122,700.89 = 25,638.43/x
  3. Step 3: Cross multiply
    81,799.56x = 122,700.89 × 25,638.43
  4. Step 4: Simplify right side
    81,799.56x = 3,145,858,179.20
  5. Step 5: Solve for x
    x = 3,145,858,179.20/81,799.56
  6. Step 6: Final answer
    x = 38,458.13

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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.