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Finding the Third Proportional to 18,507 and 40,172.25

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Solution

The third proportional to 18,507 and 40,172.25 is: 87,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507 : 40,172.25 = 40,172.25 : x
  2. Step 2: Convert to fraction form
    18,507/40,172.25 = 40,172.25/x
  3. Step 3: Cross multiply
    18,507x = 40,172.25 × 40,172.25
  4. Step 4: Simplify right side
    18,507x = 1,613,809,670.06
  5. Step 5: Solve for x
    x = 1,613,809,670.06/18,507
  6. Step 6: Final answer
    x = 87,199.96

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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.