Home / 81,823.31-122,736.50-25,662.19

Finding the Fourth Proportional to 81,823.31, 122,736.50 and 25,662.19

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Solution

The fourth proportional to 81,823.31, 122,736.50 and 25,662.19 is: 38,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,823.31 : 122,736.50 = 25,662.19 : x
  2. Step 2: Convert to fraction form
    81,823.31/122,736.50 = 25,662.19/x
  3. Step 3: Cross multiply
    81,823.31x = 122,736.50 × 25,662.19
  4. Step 4: Simplify right side
    81,823.31x = 3,149,687,382.94
  5. Step 5: Solve for x
    x = 3,149,687,382.94/81,823.31
  6. Step 6: Final answer
    x = 38,493.77

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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.