Home / 81,839.18-122,745.11-22,680.83

Finding the Fourth Proportional to 81,839.18, 122,745.11 and 22,680.83

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Solution

The fourth proportional to 81,839.18, 122,745.11 and 22,680.83 is: 34,017.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,839.18 : 122,745.11 = 22,680.83 : x
  2. Step 2: Convert to fraction form
    81,839.18/122,745.11 = 22,680.83/x
  3. Step 3: Cross multiply
    81,839.18x = 122,745.11 × 22,680.83
  4. Step 4: Simplify right side
    81,839.18x = 2,783,961,166.70
  5. Step 5: Solve for x
    x = 2,783,961,166.70/81,839.18
  6. Step 6: Final answer
    x = 34,017.46

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1.5x scale

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.