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Finding the Third Proportional to 13,576 and 31,312

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Solution

The third proportional to 13,576 and 31,312 is: 72,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576 : 31,312 = 31,312 : x
  2. Step 2: Convert to fraction form
    13,576/31,312 = 31,312/x
  3. Step 3: Cross multiply
    13,576x = 31,312 × 31,312
  4. Step 4: Simplify right side
    13,576x = 980,441,344
  5. Step 5: Solve for x
    x = 980,441,344/13,576
  6. Step 6: Final answer
    x = 72,218.72

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.