Home / 81,722.31-122,583.66-25,562.78

Finding the Fourth Proportional to 81,722.31, 122,583.66 and 25,562.78

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Solution

The fourth proportional to 81,722.31, 122,583.66 and 25,562.78 is: 38,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,722.31 : 122,583.66 = 25,562.78 : x
  2. Step 2: Convert to fraction form
    81,722.31/122,583.66 = 25,562.78/x
  3. Step 3: Cross multiply
    81,722.31x = 122,583.66 × 25,562.78
  4. Step 4: Simplify right side
    81,722.31x = 3,133,579,132.17
  5. Step 5: Solve for x
    x = 3,133,579,132.17/81,722.31
  6. Step 6: Final answer
    x = 38,344.23

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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.