Home / 81,845.34-122,769.63-25,687.29

Finding the Fourth Proportional to 81,845.34, 122,769.63 and 25,687.29

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Solution

The fourth proportional to 81,845.34, 122,769.63 and 25,687.29 is: 38,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,845.34 : 122,769.63 = 25,687.29 : x
  2. Step 2: Convert to fraction form
    81,845.34/122,769.63 = 25,687.29/x
  3. Step 3: Cross multiply
    81,845.34x = 122,769.63 × 25,687.29
  4. Step 4: Simplify right side
    81,845.34x = 3,153,619,089.00
  5. Step 5: Solve for x
    x = 3,153,619,089.00/81,845.34
  6. Step 6: Final answer
    x = 38,531.44

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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.