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Finding the Third Proportional to 61,636 and 90,260

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Solution

The third proportional to 61,636 and 90,260 is: 132,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,636 : 90,260 = 90,260 : x
  2. Step 2: Convert to fraction form
    61,636/90,260 = 90,260/x
  3. Step 3: Cross multiply
    61,636x = 90,260 × 90,260
  4. Step 4: Simplify right side
    61,636x = 8,146,867,600
  5. Step 5: Solve for x
    x = 8,146,867,600/61,636
  6. Step 6: Final answer
    x = 132,177.10

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.