Home / 81,422.10-122,129.10-41,983.20

Finding the Fourth Proportional to 81,422.10, 122,129.10 and 41,983.20

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Solution

The fourth proportional to 81,422.10, 122,129.10 and 41,983.20 is: 62,972.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,422.10 : 122,129.10 = 41,983.20 : x
  2. Step 2: Convert to fraction form
    81,422.10/122,129.10 = 41,983.20/x
  3. Step 3: Cross multiply
    81,422.10x = 122,129.10 × 41,983.20
  4. Step 4: Simplify right side
    81,422.10x = 5,127,370,431.12
  5. Step 5: Solve for x
    x = 5,127,370,431.12/81,422.10
  6. Step 6: Final answer
    x = 62,972.71

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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.