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Finding the Fourth Proportional to 62,640.22, 86,384.78 and 49,935.54

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Solution

The fourth proportional to 62,640.22, 86,384.78 and 49,935.54 is: 68,864.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640.22 : 86,384.78 = 49,935.54 : x
  2. Step 2: Convert to fraction form
    62,640.22/86,384.78 = 49,935.54/x
  3. Step 3: Cross multiply
    62,640.22x = 86,384.78 × 49,935.54
  4. Step 4: Simplify right side
    62,640.22x = 4,313,670,637.08
  5. Step 5: Solve for x
    x = 4,313,670,637.08/62,640.22
  6. Step 6: Final answer
    x = 68,864.23

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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.