Home / 81,723.80-122,517.66-31,792.16

Finding the Fourth Proportional to 81,723.80, 122,517.66 and 31,792.16

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Solution

The fourth proportional to 81,723.80, 122,517.66 and 31,792.16 is: 47,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.80 : 122,517.66 = 31,792.16 : x
  2. Step 2: Convert to fraction form
    81,723.80/122,517.66 = 31,792.16/x
  3. Step 3: Cross multiply
    81,723.80x = 122,517.66 × 31,792.16
  4. Step 4: Simplify right side
    81,723.80x = 3,895,101,049.55
  5. Step 5: Solve for x
    x = 3,895,101,049.55/81,723.80
  6. Step 6: Final answer
    x = 47,661.77

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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.