Home / 81,432.10-122,144.10-41,993.20

Finding the Fourth Proportional to 81,432.10, 122,144.10 and 41,993.20

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Solution

The fourth proportional to 81,432.10, 122,144.10 and 41,993.20 is: 62,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,432.10 : 122,144.10 = 41,993.20 : x
  2. Step 2: Convert to fraction form
    81,432.10/122,144.10 = 41,993.20/x
  3. Step 3: Cross multiply
    81,432.10x = 122,144.10 × 41,993.20
  4. Step 4: Simplify right side
    81,432.10x = 5,129,221,620.12
  5. Step 5: Solve for x
    x = 5,129,221,620.12/81,432.10
  6. Step 6: Final answer
    x = 62,987.71

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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.