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Finding the Fourth Proportional to 55,578.84, 76,691.65 and 31,704.09

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Solution

The fourth proportional to 55,578.84, 76,691.65 and 31,704.09 is: 43,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,578.84 : 76,691.65 = 31,704.09 : x
  2. Step 2: Convert to fraction form
    55,578.84/76,691.65 = 31,704.09/x
  3. Step 3: Cross multiply
    55,578.84x = 76,691.65 × 31,704.09
  4. Step 4: Simplify right side
    55,578.84x = 2,431,438,973.85
  5. Step 5: Solve for x
    x = 2,431,438,973.85/55,578.84
  6. Step 6: Final answer
    x = 43,747.57

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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.