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Finding the Third Proportional to 39,763.50 and 86,808

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Solution

The third proportional to 39,763.50 and 86,808 is: 189,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.50 : 86,808 = 86,808 : x
  2. Step 2: Convert to fraction form
    39,763.50/86,808 = 86,808/x
  3. Step 3: Cross multiply
    39,763.50x = 86,808 × 86,808
  4. Step 4: Simplify right side
    39,763.50x = 7,535,628,864
  5. Step 5: Solve for x
    x = 7,535,628,864/39,763.50
  6. Step 6: Final answer
    x = 189,511.21

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.