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Finding the Third Proportional to 56,321 and 84,315

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Solution

The third proportional to 56,321 and 84,315 is: 126,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,321 : 84,315 = 84,315 : x
  2. Step 2: Convert to fraction form
    56,321/84,315 = 84,315/x
  3. Step 3: Cross multiply
    56,321x = 84,315 × 84,315
  4. Step 4: Simplify right side
    56,321x = 7,109,019,225
  5. Step 5: Solve for x
    x = 7,109,019,225/56,321
  6. Step 6: Final answer
    x = 126,223.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.