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Finding the Fourth Proportional to 72,515.25, 108,772.88 and 25,769.97

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Solution

The fourth proportional to 72,515.25, 108,772.88 and 25,769.97 is: 38,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.25 : 108,772.88 = 25,769.97 : x
  2. Step 2: Convert to fraction form
    72,515.25/108,772.88 = 25,769.97/x
  3. Step 3: Cross multiply
    72,515.25x = 108,772.88 × 25,769.97
  4. Step 4: Simplify right side
    72,515.25x = 2,803,073,725.56
  5. Step 5: Solve for x
    x = 2,803,073,725.56/72,515.25
  6. Step 6: Final answer
    x = 38,654.96

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1.5x scale

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.