Home / 53,853.12-80,767.12-20,560.96

Finding the Fourth Proportional to 53,853.12, 80,767.12 and 20,560.96

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Solution

The fourth proportional to 53,853.12, 80,767.12 and 20,560.96 is: 30,836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,853.12 : 80,767.12 = 20,560.96 : x
  2. Step 2: Convert to fraction form
    53,853.12/80,767.12 = 20,560.96/x
  3. Step 3: Cross multiply
    53,853.12x = 80,767.12 × 20,560.96
  4. Step 4: Simplify right side
    53,853.12x = 1,660,649,523.64
  5. Step 5: Solve for x
    x = 1,660,649,523.64/53,853.12
  6. Step 6: Final answer
    x = 30,836.64

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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.