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Finding the Third Proportional to 56,418 and 84,507

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Solution

The third proportional to 56,418 and 84,507 is: 126,580.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,418 : 84,507 = 84,507 : x
  2. Step 2: Convert to fraction form
    56,418/84,507 = 84,507/x
  3. Step 3: Cross multiply
    56,418x = 84,507 × 84,507
  4. Step 4: Simplify right side
    56,418x = 7,141,433,049
  5. Step 5: Solve for x
    x = 7,141,433,049/56,418
  6. Step 6: Final answer
    x = 126,580.76

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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.