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Finding the Fourth Proportional to 62,665.97, 86,498.39 and 40,309.97

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Solution

The fourth proportional to 62,665.97, 86,498.39 and 40,309.97 is: 55,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,665.97 : 86,498.39 = 40,309.97 : x
  2. Step 2: Convert to fraction form
    62,665.97/86,498.39 = 40,309.97/x
  3. Step 3: Cross multiply
    62,665.97x = 86,498.39 × 40,309.97
  4. Step 4: Simplify right side
    62,665.97x = 3,486,747,174.23
  5. Step 5: Solve for x
    x = 3,486,747,174.23/62,665.97
  6. Step 6: Final answer
    x = 55,640.21

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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.