Home / 31,384,789.92-43,314,638.76-18,335,310.84

Finding the Fourth Proportional to 31,384,789.92, 43,314,638.76 and 18,335,310.84

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Solution

The fourth proportional to 31,384,789.92, 43,314,638.76 and 18,335,310.84 is: 25,304,848.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,384,789.92 : 43,314,638.76 = 18,335,310.84 : x
  2. Step 2: Convert to fraction form
    31,384,789.92/43,314,638.76 = 18,335,310.84/x
  3. Step 3: Cross multiply
    31,384,789.92x = 43,314,638.76 × 18,335,310.84
  4. Step 4: Simplify right side
    31,384,789.92x = 794,187,365,586,912.12
  5. Step 5: Solve for x
    x = 794,187,365,586,912.12/31,384,789.92
  6. Step 6: Final answer
    x = 25,304,848.87

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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.