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Finding the Third Proportional to 55,480.57 and 121,339.90

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Solution

The third proportional to 55,480.57 and 121,339.90 is: 265,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,480.57 : 121,339.90 = 121,339.90 : x
  2. Step 2: Convert to fraction form
    55,480.57/121,339.90 = 121,339.90/x
  3. Step 3: Cross multiply
    55,480.57x = 121,339.90 × 121,339.90
  4. Step 4: Simplify right side
    55,480.57x = 14,723,370,952.82
  5. Step 5: Solve for x
    x = 14,723,370,952.82/55,480.57
  6. Step 6: Final answer
    x = 265,378.87

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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.