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Finding the Fourth Proportional to 72,449.20, 108,706.20 and 25,735.60

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Solution

The fourth proportional to 72,449.20, 108,706.20 and 25,735.60 is: 38,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,449.20 : 108,706.20 = 25,735.60 : x
  2. Step 2: Convert to fraction form
    72,449.20/108,706.20 = 25,735.60/x
  3. Step 3: Cross multiply
    72,449.20x = 108,706.20 × 25,735.60
  4. Step 4: Simplify right side
    72,449.20x = 2,797,619,280.72
  5. Step 5: Solve for x
    x = 2,797,619,280.72/72,449.20
  6. Step 6: Final answer
    x = 38,614.91

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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.