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Finding the Third Proportional to 18,900.84 and 40,717.69

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Solution

The third proportional to 18,900.84 and 40,717.69 is: 87,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.84 : 40,717.69 = 40,717.69 : x
  2. Step 2: Convert to fraction form
    18,900.84/40,717.69 = 40,717.69/x
  3. Step 3: Cross multiply
    18,900.84x = 40,717.69 × 40,717.69
  4. Step 4: Simplify right side
    18,900.84x = 1,657,930,075.35
  5. Step 5: Solve for x
    x = 1,657,930,075.35/18,900.84
  6. Step 6: Final answer
    x = 87,717.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.