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Finding the Third Proportional to 5,090,586.75 and 7,120,725.75

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Solution

The third proportional to 5,090,586.75 and 7,120,725.75 is: 9,960,489.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,090,586.75 : 7,120,725.75 = 7,120,725.75 : x
  2. Step 2: Convert to fraction form
    5,090,586.75/7,120,725.75 = 7,120,725.75/x
  3. Step 3: Cross multiply
    5,090,586.75x = 7,120,725.75 × 7,120,725.75
  4. Step 4: Simplify right side
    5,090,586.75x = 50,704,735,206,713.06
  5. Step 5: Solve for x
    x = 50,704,735,206,713.06/5,090,586.75
  6. Step 6: Final answer
    x = 9,960,489.37

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.