Home / 81,884.56-122,821.34-22,720.74

Finding the Fourth Proportional to 81,884.56, 122,821.34 and 22,720.74

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Solution

The fourth proportional to 81,884.56, 122,821.34 and 22,720.74 is: 34,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,884.56 : 122,821.34 = 22,720.74 : x
  2. Step 2: Convert to fraction form
    81,884.56/122,821.34 = 22,720.74/x
  3. Step 3: Cross multiply
    81,884.56x = 122,821.34 × 22,720.74
  4. Step 4: Simplify right side
    81,884.56x = 2,790,591,732.59
  5. Step 5: Solve for x
    x = 2,790,591,732.59/81,884.56
  6. Step 6: Final answer
    x = 34,079.58

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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.