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Finding the Third Proportional to 42,829 and 68,203.50

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Solution

The third proportional to 42,829 and 68,203.50 is: 108,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,829 : 68,203.50 = 68,203.50 : x
  2. Step 2: Convert to fraction form
    42,829/68,203.50 = 68,203.50/x
  3. Step 3: Cross multiply
    42,829x = 68,203.50 × 68,203.50
  4. Step 4: Simplify right side
    42,829x = 4,651,717,412.25
  5. Step 5: Solve for x
    x = 4,651,717,412.25/42,829
  6. Step 6: Final answer
    x = 108,611.39

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.