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Finding the Fourth Proportional to 67,079.39, 100,619.09 and 20,332.27

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Solution

The fourth proportional to 67,079.39, 100,619.09 and 20,332.27 is: 30,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079.39 : 100,619.09 = 20,332.27 : x
  2. Step 2: Convert to fraction form
    67,079.39/100,619.09 = 20,332.27/x
  3. Step 3: Cross multiply
    67,079.39x = 100,619.09 × 20,332.27
  4. Step 4: Simplify right side
    67,079.39x = 2,045,813,982.23
  5. Step 5: Solve for x
    x = 2,045,813,982.23/67,079.39
  6. Step 6: Final answer
    x = 30,498.40

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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.