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Finding the Fourth Proportional to 57,369.67, 86,051.77 and 21,839.15

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Solution

The fourth proportional to 57,369.67, 86,051.77 and 21,839.15 is: 32,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,369.67 : 86,051.77 = 21,839.15 : x
  2. Step 2: Convert to fraction form
    57,369.67/86,051.77 = 21,839.15/x
  3. Step 3: Cross multiply
    57,369.67x = 86,051.77 × 21,839.15
  4. Step 4: Simplify right side
    57,369.67x = 1,879,297,673.33
  5. Step 5: Solve for x
    x = 1,879,297,673.33/57,369.67
  6. Step 6: Final answer
    x = 32,757.69

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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.