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Finding the Fourth Proportional to 66,080.82, 91,189.09 and 35,865.49

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Solution

The fourth proportional to 66,080.82, 91,189.09 and 35,865.49 is: 49,493.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,080.82 : 91,189.09 = 35,865.49 : x
  2. Step 2: Convert to fraction form
    66,080.82/91,189.09 = 35,865.49/x
  3. Step 3: Cross multiply
    66,080.82x = 91,189.09 × 35,865.49
  4. Step 4: Simplify right side
    66,080.82x = 3,270,541,880.25
  5. Step 5: Solve for x
    x = 3,270,541,880.25/66,080.82
  6. Step 6: Final answer
    x = 49,493.06

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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.