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Finding the Third Proportional to 21,581,139 and 45,157,469

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Solution

The third proportional to 21,581,139 and 45,157,469 is: 94,489,776.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581,139 : 45,157,469 = 45,157,469 : x
  2. Step 2: Convert to fraction form
    21,581,139/45,157,469 = 45,157,469/x
  3. Step 3: Cross multiply
    21,581,139x = 45,157,469 × 45,157,469
  4. Step 4: Simplify right side
    21,581,139x = 2,039,197,006,485,961
  5. Step 5: Solve for x
    x = 2,039,197,006,485,961/21,581,139
  6. Step 6: Final answer
    x = 94,489,776.77

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.