Home / 34,138.20-51,207.30-30,379.80

Finding the Fourth Proportional to 34,138.20, 51,207.30 and 30,379.80

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Solution

The fourth proportional to 34,138.20, 51,207.30 and 30,379.80 is: 45,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,138.20 : 51,207.30 = 30,379.80 : x
  2. Step 2: Convert to fraction form
    34,138.20/51,207.30 = 30,379.80/x
  3. Step 3: Cross multiply
    34,138.20x = 51,207.30 × 30,379.80
  4. Step 4: Simplify right side
    34,138.20x = 1,555,667,532.54
  5. Step 5: Solve for x
    x = 1,555,667,532.54/34,138.20
  6. Step 6: Final answer
    x = 45,569.70

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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.