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Finding the Third Proportional to 18,418,209 and 40,103,988.50

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Solution

The third proportional to 18,418,209 and 40,103,988.50 is: 87,322,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418,209 : 40,103,988.50 = 40,103,988.50 : x
  2. Step 2: Convert to fraction form
    18,418,209/40,103,988.50 = 40,103,988.50/x
  3. Step 3: Cross multiply
    18,418,209x = 40,103,988.50 × 40,103,988.50
  4. Step 4: Simplify right side
    18,418,209x = 1,608,329,893,608,132.25
  5. Step 5: Solve for x
    x = 1,608,329,893,608,132.25/18,418,209
  6. Step 6: Final answer
    x = 87,322,816.98

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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.