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Finding the Third Proportional to 55,570 and 79,408

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Solution

The third proportional to 55,570 and 79,408 is: 113,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,570 : 79,408 = 79,408 : x
  2. Step 2: Convert to fraction form
    55,570/79,408 = 79,408/x
  3. Step 3: Cross multiply
    55,570x = 79,408 × 79,408
  4. Step 4: Simplify right side
    55,570x = 6,305,630,464
  5. Step 5: Solve for x
    x = 6,305,630,464/55,570
  6. Step 6: Final answer
    x = 113,471.85

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.