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Finding the Fourth Proportional to 57,342.44, 79,129.87 and 31,850.45

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Solution

The fourth proportional to 57,342.44, 79,129.87 and 31,850.45 is: 43,952.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,342.44 : 79,129.87 = 31,850.45 : x
  2. Step 2: Convert to fraction form
    57,342.44/79,129.87 = 31,850.45/x
  3. Step 3: Cross multiply
    57,342.44x = 79,129.87 × 31,850.45
  4. Step 4: Simplify right side
    57,342.44x = 2,520,321,789.40
  5. Step 5: Solve for x
    x = 2,520,321,789.40/57,342.44
  6. Step 6: Final answer
    x = 43,952.12

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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.