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Finding the Fourth Proportional to 57,370.34, 79,170.82 and 31,880.86

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Solution

The fourth proportional to 57,370.34, 79,170.82 and 31,880.86 is: 43,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,370.34 : 79,170.82 = 31,880.86 : x
  2. Step 2: Convert to fraction form
    57,370.34/79,170.82 = 31,880.86/x
  3. Step 3: Cross multiply
    57,370.34x = 79,170.82 × 31,880.86
  4. Step 4: Simplify right side
    57,370.34x = 2,524,033,550.88
  5. Step 5: Solve for x
    x = 2,524,033,550.88/57,370.34
  6. Step 6: Final answer
    x = 43,995.44

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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.