Home / 81,724.31-122,586.66-25,564.79

Finding the Fourth Proportional to 81,724.31, 122,586.66 and 25,564.79

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Solution

The fourth proportional to 81,724.31, 122,586.66 and 25,564.79 is: 38,347.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,724.31 : 122,586.66 = 25,564.79 : x
  2. Step 2: Convert to fraction form
    81,724.31/122,586.66 = 25,564.79/x
  3. Step 3: Cross multiply
    81,724.31x = 122,586.66 × 25,564.79
  4. Step 4: Simplify right side
    81,724.31x = 3,133,901,606.77
  5. Step 5: Solve for x
    x = 3,133,901,606.77/81,724.31
  6. Step 6: Final answer
    x = 38,347.24

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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.