Home / 82,552.20-123,828.36-78,345

Finding the Fourth Proportional to 82,552.20, 123,828.36 and 78,345

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Solution

The fourth proportional to 82,552.20, 123,828.36 and 78,345 is: 117,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,552.20 : 123,828.36 = 78,345 : x
  2. Step 2: Convert to fraction form
    82,552.20/123,828.36 = 78,345/x
  3. Step 3: Cross multiply
    82,552.20x = 123,828.36 × 78,345
  4. Step 4: Simplify right side
    82,552.20x = 9,701,332,864.20
  5. Step 5: Solve for x
    x = 9,701,332,864.20/82,552.20
  6. Step 6: Final answer
    x = 117,517.56

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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.