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Finding the Third Proportional to 18,547.50 and 40,173

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Solution

The third proportional to 18,547.50 and 40,173 is: 87,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.50 : 40,173 = 40,173 : x
  2. Step 2: Convert to fraction form
    18,547.50/40,173 = 40,173/x
  3. Step 3: Cross multiply
    18,547.50x = 40,173 × 40,173
  4. Step 4: Simplify right side
    18,547.50x = 1,613,869,929
  5. Step 5: Solve for x
    x = 1,613,869,929/18,547.50
  6. Step 6: Final answer
    x = 87,012.80

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.