Home / 53,489.07-80,189.87-20,190.20

Finding the Fourth Proportional to 53,489.07, 80,189.87 and 20,190.20

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Solution

The fourth proportional to 53,489.07, 80,189.87 and 20,190.20 is: 30,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,489.07 : 80,189.87 = 20,190.20 : x
  2. Step 2: Convert to fraction form
    53,489.07/80,189.87 = 20,190.20/x
  3. Step 3: Cross multiply
    53,489.07x = 80,189.87 × 20,190.20
  4. Step 4: Simplify right side
    53,489.07x = 1,619,049,011.37
  5. Step 5: Solve for x
    x = 1,619,049,011.37/53,489.07
  6. Step 6: Final answer
    x = 30,268.78

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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.