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Finding the Third Proportional to 55,212 and 74,220

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Solution

The third proportional to 55,212 and 74,220 is: 99,771.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,212 : 74,220 = 74,220 : x
  2. Step 2: Convert to fraction form
    55,212/74,220 = 74,220/x
  3. Step 3: Cross multiply
    55,212x = 74,220 × 74,220
  4. Step 4: Simplify right side
    55,212x = 5,508,608,400
  5. Step 5: Solve for x
    x = 5,508,608,400/55,212
  6. Step 6: Final answer
    x = 99,771.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.