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Finding the Third Proportional to 20,307.38 and 31,087.13

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Solution

The third proportional to 20,307.38 and 31,087.13 is: 47,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.38 : 31,087.13 = 31,087.13 : x
  2. Step 2: Convert to fraction form
    20,307.38/31,087.13 = 31,087.13/x
  3. Step 3: Cross multiply
    20,307.38x = 31,087.13 × 31,087.13
  4. Step 4: Simplify right side
    20,307.38x = 966,409,340.77
  5. Step 5: Solve for x
    x = 966,409,340.77/20,307.38
  6. Step 6: Final answer
    x = 47,589.08

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.