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Finding the Third Proportional to 48,520 and 76,700

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Solution

The third proportional to 48,520 and 76,700 is: 121,246.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,520 : 76,700 = 76,700 : x
  2. Step 2: Convert to fraction form
    48,520/76,700 = 76,700/x
  3. Step 3: Cross multiply
    48,520x = 76,700 × 76,700
  4. Step 4: Simplify right side
    48,520x = 5,882,890,000
  5. Step 5: Solve for x
    x = 5,882,890,000/48,520
  6. Step 6: Final answer
    x = 121,246.70

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.