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Finding the Fourth Proportional to 40,175.78, 55,443.78 and 22,272.48

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Solution

The fourth proportional to 40,175.78, 55,443.78 and 22,272.48 is: 30,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,175.78 : 55,443.78 = 22,272.48 : x
  2. Step 2: Convert to fraction form
    40,175.78/55,443.78 = 22,272.48/x
  3. Step 3: Cross multiply
    40,175.78x = 55,443.78 × 22,272.48
  4. Step 4: Simplify right side
    40,175.78x = 1,234,870,481.17
  5. Step 5: Solve for x
    x = 1,234,870,481.17/40,175.78
  6. Step 6: Final answer
    x = 30,736.69

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1.5x scale

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.