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Finding the Fourth Proportional to 79,311.92, 109,408.96 and 47,027.76

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Solution

The fourth proportional to 79,311.92, 109,408.96 and 47,027.76 is: 64,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.92 : 109,408.96 = 47,027.76 : x
  2. Step 2: Convert to fraction form
    79,311.92/109,408.96 = 47,027.76/x
  3. Step 3: Cross multiply
    79,311.92x = 109,408.96 × 47,027.76
  4. Step 4: Simplify right side
    79,311.92x = 5,145,258,312.73
  5. Step 5: Solve for x
    x = 5,145,258,312.73/79,311.92
  6. Step 6: Final answer
    x = 64,873.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.