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Finding the Third Proportional to 18,203,386 and 39,108,216

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Solution

The third proportional to 18,203,386 and 39,108,216 is: 84,020,223.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203,386 : 39,108,216 = 39,108,216 : x
  2. Step 2: Convert to fraction form
    18,203,386/39,108,216 = 39,108,216/x
  3. Step 3: Cross multiply
    18,203,386x = 39,108,216 × 39,108,216
  4. Step 4: Simplify right side
    18,203,386x = 1,529,452,558,702,656
  5. Step 5: Solve for x
    x = 1,529,452,558,702,656/18,203,386
  6. Step 6: Final answer
    x = 84,020,223.42

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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.