Home / 45,339.20-67,976.40-20,358.80

Finding the Fourth Proportional to 45,339.20, 67,976.40 and 20,358.80

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Solution

The fourth proportional to 45,339.20, 67,976.40 and 20,358.80 is: 30,523.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,339.20 : 67,976.40 = 20,358.80 : x
  2. Step 2: Convert to fraction form
    45,339.20/67,976.40 = 20,358.80/x
  3. Step 3: Cross multiply
    45,339.20x = 67,976.40 × 20,358.80
  4. Step 4: Simplify right side
    45,339.20x = 1,383,917,932.32
  5. Step 5: Solve for x
    x = 1,383,917,932.32/45,339.20
  6. Step 6: Final answer
    x = 30,523.65

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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.