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Finding the Third Proportional to 59,639 and 80,709

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Solution

The third proportional to 59,639 and 80,709 is: 109,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,639 : 80,709 = 80,709 : x
  2. Step 2: Convert to fraction form
    59,639/80,709 = 80,709/x
  3. Step 3: Cross multiply
    59,639x = 80,709 × 80,709
  4. Step 4: Simplify right side
    59,639x = 6,513,942,681
  5. Step 5: Solve for x
    x = 6,513,942,681/59,639
  6. Step 6: Final answer
    x = 109,222.87

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.