Home / 81,372.40-122,078.10-33,961.12

Finding the Fourth Proportional to 81,372.40, 122,078.10 and 33,961.12

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Solution

The fourth proportional to 81,372.40, 122,078.10 and 33,961.12 is: 50,949.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,372.40 : 122,078.10 = 33,961.12 : x
  2. Step 2: Convert to fraction form
    81,372.40/122,078.10 = 33,961.12/x
  3. Step 3: Cross multiply
    81,372.40x = 122,078.10 × 33,961.12
  4. Step 4: Simplify right side
    81,372.40x = 4,145,909,003.47
  5. Step 5: Solve for x
    x = 4,145,909,003.47/81,372.40
  6. Step 6: Final answer
    x = 50,949.82

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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.