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Finding the Fourth Proportional to 72,260.30, 108,391.37 and 25,480.37

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Solution

The fourth proportional to 72,260.30, 108,391.37 and 25,480.37 is: 38,220.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,260.30 : 108,391.37 = 25,480.37 : x
  2. Step 2: Convert to fraction form
    72,260.30/108,391.37 = 25,480.37/x
  3. Step 3: Cross multiply
    72,260.30x = 108,391.37 × 25,480.37
  4. Step 4: Simplify right side
    72,260.30x = 2,761,852,355.98
  5. Step 5: Solve for x
    x = 2,761,852,355.98/72,260.30
  6. Step 6: Final answer
    x = 38,220.88

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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.