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Finding the Fourth Proportional to 62,833.89, 86,676.17 and 39,821.61

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Solution

The fourth proportional to 62,833.89, 86,676.17 and 39,821.61 is: 54,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,833.89 : 86,676.17 = 39,821.61 : x
  2. Step 2: Convert to fraction form
    62,833.89/86,676.17 = 39,821.61/x
  3. Step 3: Cross multiply
    62,833.89x = 86,676.17 × 39,821.61
  4. Step 4: Simplify right side
    62,833.89x = 3,451,584,438.93
  5. Step 5: Solve for x
    x = 3,451,584,438.93/62,833.89
  6. Step 6: Final answer
    x = 54,931.89

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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.