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Finding the Third Proportional to 20,113.31 and 38,400.75

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Solution

The third proportional to 20,113.31 and 38,400.75 is: 73,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.31 : 38,400.75 = 38,400.75 : x
  2. Step 2: Convert to fraction form
    20,113.31/38,400.75 = 38,400.75/x
  3. Step 3: Cross multiply
    20,113.31x = 38,400.75 × 38,400.75
  4. Step 4: Simplify right side
    20,113.31x = 1,474,617,600.56
  5. Step 5: Solve for x
    x = 1,474,617,600.56/20,113.31
  6. Step 6: Final answer
    x = 73,315.50

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.