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Finding the Third Proportional to 31,617,720 and 68,028,912

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Solution

The third proportional to 31,617,720 and 68,028,912 is: 146,371,492.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617,720 : 68,028,912 = 68,028,912 : x
  2. Step 2: Convert to fraction form
    31,617,720/68,028,912 = 68,028,912/x
  3. Step 3: Cross multiply
    31,617,720x = 68,028,912 × 68,028,912
  4. Step 4: Simplify right side
    31,617,720x = 4,627,932,867,903,744
  5. Step 5: Solve for x
    x = 4,627,932,867,903,744/31,617,720
  6. Step 6: Final answer
    x = 146,371,492.57

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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.