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Finding the Third Proportional to 12,639 and 29,787

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Solution

The third proportional to 12,639 and 29,787 is: 70,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639 : 29,787 = 29,787 : x
  2. Step 2: Convert to fraction form
    12,639/29,787 = 29,787/x
  3. Step 3: Cross multiply
    12,639x = 29,787 × 29,787
  4. Step 4: Simplify right side
    12,639x = 887,265,369
  5. Step 5: Solve for x
    x = 887,265,369/12,639
  6. Step 6: Final answer
    x = 70,200.60

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.