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Finding the Third Proportional to 55,578.75 and 121,698.75

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Solution

The third proportional to 55,578.75 and 121,698.75 is: 266,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,578.75 : 121,698.75 = 121,698.75 : x
  2. Step 2: Convert to fraction form
    55,578.75/121,698.75 = 121,698.75/x
  3. Step 3: Cross multiply
    55,578.75x = 121,698.75 × 121,698.75
  4. Step 4: Simplify right side
    55,578.75x = 14,810,585,751.56
  5. Step 5: Solve for x
    x = 14,810,585,751.56/55,578.75
  6. Step 6: Final answer
    x = 266,479.29

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.