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Finding the Fourth Proportional to 51,183.79, 76,728.90 and 43,336.86

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Solution

The fourth proportional to 51,183.79, 76,728.90 and 43,336.86 is: 64,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,183.79 : 76,728.90 = 43,336.86 : x
  2. Step 2: Convert to fraction form
    51,183.79/76,728.90 = 43,336.86/x
  3. Step 3: Cross multiply
    51,183.79x = 76,728.90 × 43,336.86
  4. Step 4: Simplify right side
    51,183.79x = 3,325,189,597.25
  5. Step 5: Solve for x
    x = 3,325,189,597.25/51,183.79
  6. Step 6: Final answer
    x = 64,965.68

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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.