Home / 80,020.27-120,048.26-30,100.78

Finding the Fourth Proportional to 80,020.27, 120,048.26 and 30,100.78

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Solution

The fourth proportional to 80,020.27, 120,048.26 and 30,100.78 is: 45,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,020.27 : 120,048.26 = 30,100.78 : x
  2. Step 2: Convert to fraction form
    80,020.27/120,048.26 = 30,100.78/x
  3. Step 3: Cross multiply
    80,020.27x = 120,048.26 × 30,100.78
  4. Step 4: Simplify right side
    80,020.27x = 3,613,545,663.40
  5. Step 5: Solve for x
    x = 3,613,545,663.40/80,020.27
  6. Step 6: Final answer
    x = 45,157.88

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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.