Home / 50,780.70-76,183.20-21,183.30

Finding the Fourth Proportional to 50,780.70, 76,183.20 and 21,183.30

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Solution

The fourth proportional to 50,780.70, 76,183.20 and 21,183.30 is: 31,780.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,780.70 : 76,183.20 = 21,183.30 : x
  2. Step 2: Convert to fraction form
    50,780.70/76,183.20 = 21,183.30/x
  3. Step 3: Cross multiply
    50,780.70x = 76,183.20 × 21,183.30
  4. Step 4: Simplify right side
    50,780.70x = 1,613,811,580.56
  5. Step 5: Solve for x
    x = 1,613,811,580.56/50,780.70
  6. Step 6: Final answer
    x = 31,780.02

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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.