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Finding the Fourth Proportional to 62,278, 85,943.66 and 39,922

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Solution

The fourth proportional to 62,278, 85,943.66 and 39,922 is: 55,092.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,278 : 85,943.66 = 39,922 : x
  2. Step 2: Convert to fraction form
    62,278/85,943.66 = 39,922/x
  3. Step 3: Cross multiply
    62,278x = 85,943.66 × 39,922
  4. Step 4: Simplify right side
    62,278x = 3,431,042,794.52
  5. Step 5: Solve for x
    x = 3,431,042,794.52/62,278
  6. Step 6: Final answer
    x = 55,092.37

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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.