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Finding the Third Proportional to 7,758 and 19,129.50

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Solution

The third proportional to 7,758 and 19,129.50 is: 47,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758 : 19,129.50 = 19,129.50 : x
  2. Step 2: Convert to fraction form
    7,758/19,129.50 = 19,129.50/x
  3. Step 3: Cross multiply
    7,758x = 19,129.50 × 19,129.50
  4. Step 4: Simplify right side
    7,758x = 365,937,770.25
  5. Step 5: Solve for x
    x = 365,937,770.25/7,758
  6. Step 6: Final answer
    x = 47,169.09

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.