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Finding the Third Proportional to 12,112,980.75 and 18,618,519

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Solution

The third proportional to 12,112,980.75 and 18,618,519 is: 28,617,997.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,980.75 : 18,618,519 = 18,618,519 : x
  2. Step 2: Convert to fraction form
    12,112,980.75/18,618,519 = 18,618,519/x
  3. Step 3: Cross multiply
    12,112,980.75x = 18,618,519 × 18,618,519
  4. Step 4: Simplify right side
    12,112,980.75x = 346,649,249,753,361
  5. Step 5: Solve for x
    x = 346,649,249,753,361/12,112,980.75
  6. Step 6: Final answer
    x = 28,617,997.25

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.