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Finding the Third Proportional to 18,267,820 and 39,291,258

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Solution

The third proportional to 18,267,820 and 39,291,258 is: 84,509,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267,820 : 39,291,258 = 39,291,258 : x
  2. Step 2: Convert to fraction form
    18,267,820/39,291,258 = 39,291,258/x
  3. Step 3: Cross multiply
    18,267,820x = 39,291,258 × 39,291,258
  4. Step 4: Simplify right side
    18,267,820x = 1,543,802,955,222,564
  5. Step 5: Solve for x
    x = 1,543,802,955,222,564/18,267,820
  6. Step 6: Final answer
    x = 84,509,424.51

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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.