Home / 80,389.68-120,567.12-50,767.92

Finding the Fourth Proportional to 80,389.68, 120,567.12 and 50,767.92

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Solution

The fourth proportional to 80,389.68, 120,567.12 and 50,767.92 is: 76,140.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389.68 : 120,567.12 = 50,767.92 : x
  2. Step 2: Convert to fraction form
    80,389.68/120,567.12 = 50,767.92/x
  3. Step 3: Cross multiply
    80,389.68x = 120,567.12 × 50,767.92
  4. Step 4: Simplify right side
    80,389.68x = 6,120,941,902.79
  5. Step 5: Solve for x
    x = 6,120,941,902.79/80,389.68
  6. Step 6: Final answer
    x = 76,140.89

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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.