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Finding the Third Proportional to 18,203,378 and 39,108,200

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Solution

The third proportional to 18,203,378 and 39,108,200 is: 84,020,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203,378 : 39,108,200 = 39,108,200 : x
  2. Step 2: Convert to fraction form
    18,203,378/39,108,200 = 39,108,200/x
  3. Step 3: Cross multiply
    18,203,378x = 39,108,200 × 39,108,200
  4. Step 4: Simplify right side
    18,203,378x = 1,529,451,307,240,000
  5. Step 5: Solve for x
    x = 1,529,451,307,240,000/18,203,378
  6. Step 6: Final answer
    x = 84,020,191.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.