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Finding the Fourth Proportional to 62,644.22, 86,390.30 and 49,939.54

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Solution

The fourth proportional to 62,644.22, 86,390.30 and 49,939.54 is: 68,869.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,644.22 : 86,390.30 = 49,939.54 : x
  2. Step 2: Convert to fraction form
    62,644.22/86,390.30 = 49,939.54/x
  3. Step 3: Cross multiply
    62,644.22x = 86,390.30 × 49,939.54
  4. Step 4: Simplify right side
    62,644.22x = 4,314,291,842.46
  5. Step 5: Solve for x
    x = 4,314,291,842.46/62,644.22
  6. Step 6: Final answer
    x = 68,869.75

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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.