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Finding the Third Proportional to 30,703.50 and 71,586

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Solution

The third proportional to 30,703.50 and 71,586 is: 166,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,703.50 : 71,586 = 71,586 : x
  2. Step 2: Convert to fraction form
    30,703.50/71,586 = 71,586/x
  3. Step 3: Cross multiply
    30,703.50x = 71,586 × 71,586
  4. Step 4: Simplify right side
    30,703.50x = 5,124,555,396
  5. Step 5: Solve for x
    x = 5,124,555,396/30,703.50
  6. Step 6: Final answer
    x = 166,904.60

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Why These Related Problems?

These problems maintain the same ratio (2.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.