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Finding the Fourth Proportional to 73,276.80, 109,958.40 and 48,388.80

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Solution

The fourth proportional to 73,276.80, 109,958.40 and 48,388.80 is: 72,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,276.80 : 109,958.40 = 48,388.80 : x
  2. Step 2: Convert to fraction form
    73,276.80/109,958.40 = 48,388.80/x
  3. Step 3: Cross multiply
    73,276.80x = 109,958.40 × 48,388.80
  4. Step 4: Simplify right side
    73,276.80x = 5,320,755,025.92
  5. Step 5: Solve for x
    x = 5,320,755,025.92/73,276.80
  6. Step 6: Final answer
    x = 72,611.73

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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.