Home / 81,571.12-122,356.44-22,406.85

Finding the Fourth Proportional to 81,571.12, 122,356.44 and 22,406.85

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Solution

The fourth proportional to 81,571.12, 122,356.44 and 22,406.85 is: 33,610.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.12 : 122,356.44 = 22,406.85 : x
  2. Step 2: Convert to fraction form
    81,571.12/122,356.44 = 22,406.85/x
  3. Step 3: Cross multiply
    81,571.12x = 122,356.44 × 22,406.85
  4. Step 4: Simplify right side
    81,571.12x = 2,741,622,397.61
  5. Step 5: Solve for x
    x = 2,741,622,397.61/81,571.12
  6. Step 6: Final answer
    x = 33,610.21

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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.