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Finding the Third Proportional to 31,747,140 and 68,906,376

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Solution

The third proportional to 31,747,140 and 68,906,376 is: 149,559,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,747,140 : 68,906,376 = 68,906,376 : x
  2. Step 2: Convert to fraction form
    31,747,140/68,906,376 = 68,906,376/x
  3. Step 3: Cross multiply
    31,747,140x = 68,906,376 × 68,906,376
  4. Step 4: Simplify right side
    31,747,140x = 4,748,088,653,453,376
  5. Step 5: Solve for x
    x = 4,748,088,653,453,376/31,747,140
  6. Step 6: Final answer
    x = 149,559,571.46

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.