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Finding the Fourth Proportional to 57,791.39, 86,704.79 and 51,830.60

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Solution

The fourth proportional to 57,791.39, 86,704.79 and 51,830.60 is: 77,761.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,791.39 : 86,704.79 = 51,830.60 : x
  2. Step 2: Convert to fraction form
    57,791.39/86,704.79 = 51,830.60/x
  3. Step 3: Cross multiply
    57,791.39x = 86,704.79 × 51,830.60
  4. Step 4: Simplify right side
    57,791.39x = 4,493,960,595.90
  5. Step 5: Solve for x
    x = 4,493,960,595.90/57,791.39
  6. Step 6: Final answer
    x = 77,761.77

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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.