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Finding the Fourth Proportional to 73,033.72, 100,786.46 and 39,499.64

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Solution

The fourth proportional to 73,033.72, 100,786.46 and 39,499.64 is: 54,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,033.72 : 100,786.46 = 39,499.64 : x
  2. Step 2: Convert to fraction form
    73,033.72/100,786.46 = 39,499.64/x
  3. Step 3: Cross multiply
    73,033.72x = 100,786.46 × 39,499.64
  4. Step 4: Simplify right side
    73,033.72x = 3,981,028,886.87
  5. Step 5: Solve for x
    x = 3,981,028,886.87/73,033.72
  6. Step 6: Final answer
    x = 54,509.46

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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.