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Finding the Fourth Proportional to 73,157.69, 109,736.54 and 20,567.18

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Solution

The fourth proportional to 73,157.69, 109,736.54 and 20,567.18 is: 30,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.69 : 109,736.54 = 20,567.18 : x
  2. Step 2: Convert to fraction form
    73,157.69/109,736.54 = 20,567.18/x
  3. Step 3: Cross multiply
    73,157.69x = 109,736.54 × 20,567.18
  4. Step 4: Simplify right side
    73,157.69x = 2,256,970,519.24
  5. Step 5: Solve for x
    x = 2,256,970,519.24/73,157.69
  6. Step 6: Final answer
    x = 30,850.76

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Similar ratio
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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.