Home / 72,493.20-108,743.40-25,749.72

Finding the Fourth Proportional to 72,493.20, 108,743.40 and 25,749.72

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Solution

The fourth proportional to 72,493.20, 108,743.40 and 25,749.72 is: 38,625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,493.20 : 108,743.40 = 25,749.72 : x
  2. Step 2: Convert to fraction form
    72,493.20/108,743.40 = 25,749.72/x
  3. Step 3: Cross multiply
    72,493.20x = 108,743.40 × 25,749.72
  4. Step 4: Simplify right side
    72,493.20x = 2,800,112,101.85
  5. Step 5: Solve for x
    x = 2,800,112,101.85/72,493.20
  6. Step 6: Final answer
    x = 38,625.86

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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.