Home / 90,721.77-125,198.76-49,883.78

Finding the Fourth Proportional to 90,721.77, 125,198.76 and 49,883.78

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Solution

The fourth proportional to 90,721.77, 125,198.76 and 49,883.78 is: 68,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721.77 : 125,198.76 = 49,883.78 : x
  2. Step 2: Convert to fraction form
    90,721.77/125,198.76 = 49,883.78/x
  3. Step 3: Cross multiply
    90,721.77x = 125,198.76 × 49,883.78
  4. Step 4: Simplify right side
    90,721.77x = 6,245,387,400.11
  5. Step 5: Solve for x
    x = 6,245,387,400.11/90,721.77
  6. Step 6: Final answer
    x = 68,841.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.