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Finding the Third Proportional to 56,210 and 84,684

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Solution

The third proportional to 56,210 and 84,684 is: 127,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,210 : 84,684 = 84,684 : x
  2. Step 2: Convert to fraction form
    56,210/84,684 = 84,684/x
  3. Step 3: Cross multiply
    56,210x = 84,684 × 84,684
  4. Step 4: Simplify right side
    56,210x = 7,171,379,856
  5. Step 5: Solve for x
    x = 7,171,379,856/56,210
  6. Step 6: Final answer
    x = 127,581.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.