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Finding the Fourth Proportional to 100,540.56, 150,810.76 and 25,660.72

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Solution

The fourth proportional to 100,540.56, 150,810.76 and 25,660.72 is: 38,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,540.56 : 150,810.76 = 25,660.72 : x
  2. Step 2: Convert to fraction form
    100,540.56/150,810.76 = 25,660.72/x
  3. Step 3: Cross multiply
    100,540.56x = 150,810.76 × 25,660.72
  4. Step 4: Simplify right side
    100,540.56x = 3,869,912,685.35
  5. Step 5: Solve for x
    x = 3,869,912,685.35/100,540.56
  6. Step 6: Final answer
    x = 38,491.06

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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.