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Finding the Third Proportional to 16,899.75 and 39,120.75

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Solution

The third proportional to 16,899.75 and 39,120.75 is: 90,559.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,899.75 : 39,120.75 = 39,120.75 : x
  2. Step 2: Convert to fraction form
    16,899.75/39,120.75 = 39,120.75/x
  3. Step 3: Cross multiply
    16,899.75x = 39,120.75 × 39,120.75
  4. Step 4: Simplify right side
    16,899.75x = 1,530,433,080.56
  5. Step 5: Solve for x
    x = 1,530,433,080.56/16,899.75
  6. Step 6: Final answer
    x = 90,559.51

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1.5x scale

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.