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Finding the Third Proportional to 30,558.75 and 63,021

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Solution

The third proportional to 30,558.75 and 63,021 is: 129,967.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,558.75 : 63,021 = 63,021 : x
  2. Step 2: Convert to fraction form
    30,558.75/63,021 = 63,021/x
  3. Step 3: Cross multiply
    30,558.75x = 63,021 × 63,021
  4. Step 4: Simplify right side
    30,558.75x = 3,971,646,441
  5. Step 5: Solve for x
    x = 3,971,646,441/30,558.75
  6. Step 6: Final answer
    x = 129,967.57

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.