Home / 81,571.12-122,333.16-22,408.72

Finding the Fourth Proportional to 81,571.12, 122,333.16 and 22,408.72

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Solution

The fourth proportional to 81,571.12, 122,333.16 and 22,408.72 is: 33,606.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.12 : 122,333.16 = 22,408.72 : x
  2. Step 2: Convert to fraction form
    81,571.12/122,333.16 = 22,408.72/x
  3. Step 3: Cross multiply
    81,571.12x = 122,333.16 × 22,408.72
  4. Step 4: Simplify right side
    81,571.12x = 2,741,329,529.16
  5. Step 5: Solve for x
    x = 2,741,329,529.16/81,571.12
  6. Step 6: Final answer
    x = 33,606.62

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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.