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Finding the Fourth Proportional to 73,079.55, 109,623.51 and 20,493.09

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Solution

The fourth proportional to 73,079.55, 109,623.51 and 20,493.09 is: 30,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,079.55 : 109,623.51 = 20,493.09 : x
  2. Step 2: Convert to fraction form
    73,079.55/109,623.51 = 20,493.09/x
  3. Step 3: Cross multiply
    73,079.55x = 109,623.51 × 20,493.09
  4. Step 4: Simplify right side
    73,079.55x = 2,246,524,456.55
  5. Step 5: Solve for x
    x = 2,246,524,456.55/73,079.55
  6. Step 6: Final answer
    x = 30,740.81

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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.