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Finding the Third Proportional to 72,717,731 and 161,577,777

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Solution

The third proportional to 72,717,731 and 161,577,777 is: 359,023,551.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,717,731 : 161,577,777 = 161,577,777 : x
  2. Step 2: Convert to fraction form
    72,717,731/161,577,777 = 161,577,777/x
  3. Step 3: Cross multiply
    72,717,731x = 161,577,777 × 161,577,777
  4. Step 4: Simplify right side
    72,717,731x = 26,107,378,020,261,728
  5. Step 5: Solve for x
    x = 26,107,378,020,261,728/72,717,731
  6. Step 6: Final answer
    x = 359,023,551.22

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.