Home / 75,979.32-113,964.66-20,571

Finding the Fourth Proportional to 75,979.32, 113,964.66 and 20,571

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Solution

The fourth proportional to 75,979.32, 113,964.66 and 20,571 is: 30,855.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,979.32 : 113,964.66 = 20,571 : x
  2. Step 2: Convert to fraction form
    75,979.32/113,964.66 = 20,571/x
  3. Step 3: Cross multiply
    75,979.32x = 113,964.66 × 20,571
  4. Step 4: Simplify right side
    75,979.32x = 2,344,367,020.86
  5. Step 5: Solve for x
    x = 2,344,367,020.86/75,979.32
  6. Step 6: Final answer
    x = 30,855.33

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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.