Home / 77,091.66-115,645.17-20,932.65

Finding the Fourth Proportional to 77,091.66, 115,645.17 and 20,932.65

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Solution

The fourth proportional to 77,091.66, 115,645.17 and 20,932.65 is: 31,401.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,091.66 : 115,645.17 = 20,932.65 : x
  2. Step 2: Convert to fraction form
    77,091.66/115,645.17 = 20,932.65/x
  3. Step 3: Cross multiply
    77,091.66x = 115,645.17 × 20,932.65
  4. Step 4: Simplify right side
    77,091.66x = 2,420,759,867.80
  5. Step 5: Solve for x
    x = 2,420,759,867.80/77,091.66
  6. Step 6: Final answer
    x = 31,401.06

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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.