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Finding the Fourth Proportional to 67,240.80, 100,866.72 and 20,494.08

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Solution

The fourth proportional to 67,240.80, 100,866.72 and 20,494.08 is: 30,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,240.80 : 100,866.72 = 20,494.08 : x
  2. Step 2: Convert to fraction form
    67,240.80/100,866.72 = 20,494.08/x
  3. Step 3: Cross multiply
    67,240.80x = 100,866.72 × 20,494.08
  4. Step 4: Simplify right side
    67,240.80x = 2,067,170,629.02
  5. Step 5: Solve for x
    x = 2,067,170,629.02/67,240.80
  6. Step 6: Final answer
    x = 30,742.80

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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.