Home / 81,680.19-122,537.30-25,518.03

Finding the Fourth Proportional to 81,680.19, 122,537.30 and 25,518.03

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Solution

The fourth proportional to 81,680.19, 122,537.30 and 25,518.03 is: 38,282.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,680.19 : 122,537.30 = 25,518.03 : x
  2. Step 2: Convert to fraction form
    81,680.19/122,537.30 = 25,518.03/x
  3. Step 3: Cross multiply
    81,680.19x = 122,537.30 × 25,518.03
  4. Step 4: Simplify right side
    81,680.19x = 3,126,910,497.52
  5. Step 5: Solve for x
    x = 3,126,910,497.52/81,680.19
  6. Step 6: Final answer
    x = 38,282.36

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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.