Home / 67,029.12-100,540.44-20,285.64

Finding the Fourth Proportional to 67,029.12, 100,540.44 and 20,285.64

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Solution

The fourth proportional to 67,029.12, 100,540.44 and 20,285.64 is: 30,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,029.12 : 100,540.44 = 20,285.64 : x
  2. Step 2: Convert to fraction form
    67,029.12/100,540.44 = 20,285.64/x
  3. Step 3: Cross multiply
    67,029.12x = 100,540.44 × 20,285.64
  4. Step 4: Simplify right side
    67,029.12x = 2,039,527,171.28
  5. Step 5: Solve for x
    x = 2,039,527,171.28/67,029.12
  6. Step 6: Final answer
    x = 30,427.48

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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.