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Finding the Fourth Proportional to 43,939.53, 65,902.41 and 15,855.21

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Solution

The fourth proportional to 43,939.53, 65,902.41 and 15,855.21 is: 23,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,939.53 : 65,902.41 = 15,855.21 : x
  2. Step 2: Convert to fraction form
    43,939.53/65,902.41 = 15,855.21/x
  3. Step 3: Cross multiply
    43,939.53x = 65,902.41 × 15,855.21
  4. Step 4: Simplify right side
    43,939.53x = 1,044,896,550.06
  5. Step 5: Solve for x
    x = 1,044,896,550.06/43,939.53
  6. Step 6: Final answer
    x = 23,780.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.