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Finding the Third Proportional to 51,405.75 and 77,109.75

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Solution

The third proportional to 51,405.75 and 77,109.75 is: 115,666.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,405.75 : 77,109.75 = 77,109.75 : x
  2. Step 2: Convert to fraction form
    51,405.75/77,109.75 = 77,109.75/x
  3. Step 3: Cross multiply
    51,405.75x = 77,109.75 × 77,109.75
  4. Step 4: Simplify right side
    51,405.75x = 5,945,913,545.06
  5. Step 5: Solve for x
    x = 5,945,913,545.06/51,405.75
  6. Step 6: Final answer
    x = 115,666.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.