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Finding the Fourth Proportional to 73,245.48, 109,858.50 and 20,659.20

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Solution

The fourth proportional to 73,245.48, 109,858.50 and 20,659.20 is: 30,986.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,245.48 : 109,858.50 = 20,659.20 : x
  2. Step 2: Convert to fraction form
    73,245.48/109,858.50 = 20,659.20/x
  3. Step 3: Cross multiply
    73,245.48x = 109,858.50 × 20,659.20
  4. Step 4: Simplify right side
    73,245.48x = 2,269,588,723.20
  5. Step 5: Solve for x
    x = 2,269,588,723.20/73,245.48
  6. Step 6: Final answer
    x = 30,986.06

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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.