Home / 80,572.05-120,860.46-38,456.57

Finding the Fourth Proportional to 80,572.05, 120,860.46 and 38,456.57

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Solution

The fourth proportional to 80,572.05, 120,860.46 and 38,456.57 is: 57,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,572.05 : 120,860.46 = 38,456.57 : x
  2. Step 2: Convert to fraction form
    80,572.05/120,860.46 = 38,456.57/x
  3. Step 3: Cross multiply
    80,572.05x = 120,860.46 × 38,456.57
  4. Step 4: Simplify right side
    80,572.05x = 4,647,878,135.92
  5. Step 5: Solve for x
    x = 4,647,878,135.92/80,572.05
  6. Step 6: Final answer
    x = 57,685.99

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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.