Home / 81,961.56-122,947.26-25,803.48

Finding the Fourth Proportional to 81,961.56, 122,947.26 and 25,803.48

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Solution

The fourth proportional to 81,961.56, 122,947.26 and 25,803.48 is: 38,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961.56 : 122,947.26 = 25,803.48 : x
  2. Step 2: Convert to fraction form
    81,961.56/122,947.26 = 25,803.48/x
  3. Step 3: Cross multiply
    81,961.56x = 122,947.26 × 25,803.48
  4. Step 4: Simplify right side
    81,961.56x = 3,172,467,164.46
  5. Step 5: Solve for x
    x = 3,172,467,164.46/81,961.56
  6. Step 6: Final answer
    x = 38,706.77

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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.