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Finding the Third Proportional to 38,631,881 and 81,869,584

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Solution

The third proportional to 38,631,881 and 81,869,584 is: 173,499,933.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,631,881 : 81,869,584 = 81,869,584 : x
  2. Step 2: Convert to fraction form
    38,631,881/81,869,584 = 81,869,584/x
  3. Step 3: Cross multiply
    38,631,881x = 81,869,584 × 81,869,584
  4. Step 4: Simplify right side
    38,631,881x = 6,702,628,784,333,056
  5. Step 5: Solve for x
    x = 6,702,628,784,333,056/38,631,881
  6. Step 6: Final answer
    x = 173,499,933.50

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.