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Finding the Third Proportional to 18,618 and 40,518.75

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Solution

The third proportional to 18,618 and 40,518.75 is: 88,181.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618 : 40,518.75 = 40,518.75 : x
  2. Step 2: Convert to fraction form
    18,618/40,518.75 = 40,518.75/x
  3. Step 3: Cross multiply
    18,618x = 40,518.75 × 40,518.75
  4. Step 4: Simplify right side
    18,618x = 1,641,769,101.56
  5. Step 5: Solve for x
    x = 1,641,769,101.56/18,618
  6. Step 6: Final answer
    x = 88,181.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.