Home / 72,204.20-108,306.30-30,645.80

Finding the Fourth Proportional to 72,204.20, 108,306.30 and 30,645.80

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Solution

The fourth proportional to 72,204.20, 108,306.30 and 30,645.80 is: 45,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,204.20 : 108,306.30 = 30,645.80 : x
  2. Step 2: Convert to fraction form
    72,204.20/108,306.30 = 30,645.80/x
  3. Step 3: Cross multiply
    72,204.20x = 108,306.30 × 30,645.80
  4. Step 4: Simplify right side
    72,204.20x = 3,319,133,208.54
  5. Step 5: Solve for x
    x = 3,319,133,208.54/72,204.20
  6. Step 6: Final answer
    x = 45,968.70

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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.