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Finding the Third Proportional to 31,257 and 68,441.63

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Solution

The third proportional to 31,257 and 68,441.63 is: 149,862.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,257 : 68,441.63 = 68,441.63 : x
  2. Step 2: Convert to fraction form
    31,257/68,441.63 = 68,441.63/x
  3. Step 3: Cross multiply
    31,257x = 68,441.63 × 68,441.63
  4. Step 4: Simplify right side
    31,257x = 4,684,256,032.64
  5. Step 5: Solve for x
    x = 4,684,256,032.64/31,257
  6. Step 6: Final answer
    x = 149,862.62

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.