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Finding the Fourth Proportional to 75,121.72, 112,697.72 and 27,737.12

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Solution

The fourth proportional to 75,121.72, 112,697.72 and 27,737.12 is: 41,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,121.72 : 112,697.72 = 27,737.12 : x
  2. Step 2: Convert to fraction form
    75,121.72/112,697.72 = 27,737.12/x
  3. Step 3: Cross multiply
    75,121.72x = 112,697.72 × 27,737.12
  4. Step 4: Simplify right side
    75,121.72x = 3,125,910,183.37
  5. Step 5: Solve for x
    x = 3,125,910,183.37/75,121.72
  6. Step 6: Final answer
    x = 41,611.27

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1.5x scale

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.