Home / 40,640-56,081.64-22,736.66

Finding the Fourth Proportional to 40,640, 56,081.64 and 22,736.66

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Solution

The fourth proportional to 40,640, 56,081.64 and 22,736.66 is: 31,375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,640 : 56,081.64 = 22,736.66 : x
  2. Step 2: Convert to fraction form
    40,640/56,081.64 = 22,736.66/x
  3. Step 3: Cross multiply
    40,640x = 56,081.64 × 22,736.66
  4. Step 4: Simplify right side
    40,640x = 1,275,109,180.92
  5. Step 5: Solve for x
    x = 1,275,109,180.92/40,640
  6. Step 6: Final answer
    x = 31,375.72

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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.