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Finding the Fourth Proportional to 73,079.56, 109,616.96 and 30,948.40

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Solution

The fourth proportional to 73,079.56, 109,616.96 and 30,948.40 is: 46,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,079.56 : 109,616.96 = 30,948.40 : x
  2. Step 2: Convert to fraction form
    73,079.56/109,616.96 = 30,948.40/x
  3. Step 3: Cross multiply
    73,079.56x = 109,616.96 × 30,948.40
  4. Step 4: Simplify right side
    73,079.56x = 3,392,469,524.86
  5. Step 5: Solve for x
    x = 3,392,469,524.86/73,079.56
  6. Step 6: Final answer
    x = 46,421.59

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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.