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Finding the Fourth Proportional to 73,408.96, 110,113.44 and 20,811.88

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Solution

The fourth proportional to 73,408.96, 110,113.44 and 20,811.88 is: 31,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,408.96 : 110,113.44 = 20,811.88 : x
  2. Step 2: Convert to fraction form
    73,408.96/110,113.44 = 20,811.88/x
  3. Step 3: Cross multiply
    73,408.96x = 110,113.44 × 20,811.88
  4. Step 4: Simplify right side
    73,408.96x = 2,291,667,699.67
  5. Step 5: Solve for x
    x = 2,291,667,699.67/73,408.96
  6. Step 6: Final answer
    x = 31,217.82

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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.