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Finding the Fourth Proportional to 66,105.90, 91,227.24 and 35,891.22

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Solution

The fourth proportional to 66,105.90, 91,227.24 and 35,891.22 is: 49,530.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,105.90 : 91,227.24 = 35,891.22 : x
  2. Step 2: Convert to fraction form
    66,105.90/91,227.24 = 35,891.22/x
  3. Step 3: Cross multiply
    66,105.90x = 91,227.24 × 35,891.22
  4. Step 4: Simplify right side
    66,105.90x = 3,274,256,940.83
  5. Step 5: Solve for x
    x = 3,274,256,940.83/66,105.90
  6. Step 6: Final answer
    x = 49,530.48

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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.