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Finding the Third Proportional to 56,690 and 79,257

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Solution

The third proportional to 56,690 and 79,257 is: 110,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,690 : 79,257 = 79,257 : x
  2. Step 2: Convert to fraction form
    56,690/79,257 = 79,257/x
  3. Step 3: Cross multiply
    56,690x = 79,257 × 79,257
  4. Step 4: Simplify right side
    56,690x = 6,281,672,049
  5. Step 5: Solve for x
    x = 6,281,672,049/56,690
  6. Step 6: Final answer
    x = 110,807.41

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.