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Finding the Fourth Proportional to 73,157.66, 109,736.50 and 20,567.15

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Solution

The fourth proportional to 73,157.66, 109,736.50 and 20,567.15 is: 30,850.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.66 : 109,736.50 = 20,567.15 : x
  2. Step 2: Convert to fraction form
    73,157.66/109,736.50 = 20,567.15/x
  3. Step 3: Cross multiply
    73,157.66x = 109,736.50 × 20,567.15
  4. Step 4: Simplify right side
    73,157.66x = 2,256,967,055.98
  5. Step 5: Solve for x
    x = 2,256,967,055.98/73,157.66
  6. Step 6: Final answer
    x = 30,850.73

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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.