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Finding the Third Proportional to 21,427.50 and 46,821

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Solution

The third proportional to 21,427.50 and 46,821 is: 102,308.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.50 : 46,821 = 46,821 : x
  2. Step 2: Convert to fraction form
    21,427.50/46,821 = 46,821/x
  3. Step 3: Cross multiply
    21,427.50x = 46,821 × 46,821
  4. Step 4: Simplify right side
    21,427.50x = 2,192,206,041
  5. Step 5: Solve for x
    x = 2,192,206,041/21,427.50
  6. Step 6: Final answer
    x = 102,308.06

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.