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Finding the Fourth Proportional to 62,639.88, 86,447 and 41,381.88

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Solution

The fourth proportional to 62,639.88, 86,447 and 41,381.88 is: 57,109.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,639.88 : 86,447 = 41,381.88 : x
  2. Step 2: Convert to fraction form
    62,639.88/86,447 = 41,381.88/x
  3. Step 3: Cross multiply
    62,639.88x = 86,447 × 41,381.88
  4. Step 4: Simplify right side
    62,639.88x = 3,577,339,380.36
  5. Step 5: Solve for x
    x = 3,577,339,380.36/62,639.88
  6. Step 6: Final answer
    x = 57,109.61

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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.