Home / 81,822.11-122,768.69-44,408.61

Finding the Fourth Proportional to 81,822.11, 122,768.69 and 44,408.61

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Solution

The fourth proportional to 81,822.11, 122,768.69 and 44,408.61 is: 66,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,822.11 : 122,768.69 = 44,408.61 : x
  2. Step 2: Convert to fraction form
    81,822.11/122,768.69 = 44,408.61/x
  3. Step 3: Cross multiply
    81,822.11x = 122,768.69 × 44,408.61
  4. Step 4: Simplify right side
    81,822.11x = 5,451,986,652.38
  5. Step 5: Solve for x
    x = 5,451,986,652.38/81,822.11
  6. Step 6: Final answer
    x = 66,632.20

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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.