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Finding the Fourth Proportional to 57,361, 79,170.83 and 31,876.11

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Solution

The fourth proportional to 57,361, 79,170.83 and 31,876.11 is: 43,996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361 : 79,170.83 = 31,876.11 : x
  2. Step 2: Convert to fraction form
    57,361/79,170.83 = 31,876.11/x
  3. Step 3: Cross multiply
    57,361x = 79,170.83 × 31,876.11
  4. Step 4: Simplify right side
    57,361x = 2,523,658,085.87
  5. Step 5: Solve for x
    x = 2,523,658,085.87/57,361
  6. Step 6: Final answer
    x = 43,996.06

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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.