Home / 66,930.20-100,395.30-51,183.80

Finding the Fourth Proportional to 66,930.20, 100,395.30 and 51,183.80

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Solution

The fourth proportional to 66,930.20, 100,395.30 and 51,183.80 is: 76,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930.20 : 100,395.30 = 51,183.80 : x
  2. Step 2: Convert to fraction form
    66,930.20/100,395.30 = 51,183.80/x
  3. Step 3: Cross multiply
    66,930.20x = 100,395.30 × 51,183.80
  4. Step 4: Simplify right side
    66,930.20x = 5,138,612,956.14
  5. Step 5: Solve for x
    x = 5,138,612,956.14/66,930.20
  6. Step 6: Final answer
    x = 76,775.70

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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.