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Finding the Third Proportional to 59,715 and 128,277

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Solution

The third proportional to 59,715 and 128,277 is: 275,558.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,715 : 128,277 = 128,277 : x
  2. Step 2: Convert to fraction form
    59,715/128,277 = 128,277/x
  3. Step 3: Cross multiply
    59,715x = 128,277 × 128,277
  4. Step 4: Simplify right side
    59,715x = 16,454,988,729
  5. Step 5: Solve for x
    x = 16,454,988,729/59,715
  6. Step 6: Final answer
    x = 275,558.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.