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Finding the Third Proportional to 61,008 and 91,386

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Solution

The third proportional to 61,008 and 91,386 is: 136,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008 : 91,386 = 91,386 : x
  2. Step 2: Convert to fraction form
    61,008/91,386 = 91,386/x
  3. Step 3: Cross multiply
    61,008x = 91,386 × 91,386
  4. Step 4: Simplify right side
    61,008x = 8,351,400,996
  5. Step 5: Solve for x
    x = 8,351,400,996/61,008
  6. Step 6: Final answer
    x = 136,890.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.