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Finding the Third Proportional to 39,578 and 80,618

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Solution

The third proportional to 39,578 and 80,618 is: 164,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578 : 80,618 = 80,618 : x
  2. Step 2: Convert to fraction form
    39,578/80,618 = 80,618/x
  3. Step 3: Cross multiply
    39,578x = 80,618 × 80,618
  4. Step 4: Simplify right side
    39,578x = 6,499,261,924
  5. Step 5: Solve for x
    x = 6,499,261,924/39,578
  6. Step 6: Final answer
    x = 164,214.01

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.