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Finding the Fourth Proportional to 69,031.11, 103,531.23 and 26,912.31

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Solution

The fourth proportional to 69,031.11, 103,531.23 and 26,912.31 is: 40,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,031.11 : 103,531.23 = 26,912.31 : x
  2. Step 2: Convert to fraction form
    69,031.11/103,531.23 = 26,912.31/x
  3. Step 3: Cross multiply
    69,031.11x = 103,531.23 × 26,912.31
  4. Step 4: Simplify right side
    69,031.11x = 2,786,264,556.44
  5. Step 5: Solve for x
    x = 2,786,264,556.44/69,031.11
  6. Step 6: Final answer
    x = 40,362.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.