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Finding the Third Proportional to 18,638,208 and 39,867,136

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Solution

The third proportional to 18,638,208 and 39,867,136 is: 85,275,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638,208 : 39,867,136 = 39,867,136 : x
  2. Step 2: Convert to fraction form
    18,638,208/39,867,136 = 39,867,136/x
  3. Step 3: Cross multiply
    18,638,208x = 39,867,136 × 39,867,136
  4. Step 4: Simplify right side
    18,638,208x = 1,589,388,532,842,496
  5. Step 5: Solve for x
    x = 1,589,388,532,842,496/18,638,208
  6. Step 6: Final answer
    x = 85,275,823.34

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.