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Finding the Fourth Proportional to 57,281.58, 79,048.41 and 31,791.79

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Solution

The fourth proportional to 57,281.58, 79,048.41 and 31,791.79 is: 43,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,281.58 : 79,048.41 = 31,791.79 : x
  2. Step 2: Convert to fraction form
    57,281.58/79,048.41 = 31,791.79/x
  3. Step 3: Cross multiply
    57,281.58x = 79,048.41 × 31,791.79
  4. Step 4: Simplify right side
    57,281.58x = 2,513,090,450.55
  5. Step 5: Solve for x
    x = 2,513,090,450.55/57,281.58
  6. Step 6: Final answer
    x = 43,872.58

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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.