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Finding the Fourth Proportional to 73,321.20, 109,908.90 and 33,809.40

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Solution

The fourth proportional to 73,321.20, 109,908.90 and 33,809.40 is: 50,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,321.20 : 109,908.90 = 33,809.40 : x
  2. Step 2: Convert to fraction form
    73,321.20/109,908.90 = 33,809.40/x
  3. Step 3: Cross multiply
    73,321.20x = 109,908.90 × 33,809.40
  4. Step 4: Simplify right side
    73,321.20x = 3,715,953,963.66
  5. Step 5: Solve for x
    x = 3,715,953,963.66/73,321.20
  6. Step 6: Final answer
    x = 50,680.48

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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.