Home / 72,629.20-108,943.80-25,865.20

Finding the Fourth Proportional to 72,629.20, 108,943.80 and 25,865.20

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Solution

The fourth proportional to 72,629.20, 108,943.80 and 25,865.20 is: 38,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,629.20 : 108,943.80 = 25,865.20 : x
  2. Step 2: Convert to fraction form
    72,629.20/108,943.80 = 25,865.20/x
  3. Step 3: Cross multiply
    72,629.20x = 108,943.80 × 25,865.20
  4. Step 4: Simplify right side
    72,629.20x = 2,817,853,175.76
  5. Step 5: Solve for x
    x = 2,817,853,175.76/72,629.20
  6. Step 6: Final answer
    x = 38,797.80

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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.