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Finding the Fourth Proportional to 67,079.70, 100,631.70 and 33,715.80

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Solution

The fourth proportional to 67,079.70, 100,631.70 and 33,715.80 is: 50,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079.70 : 100,631.70 = 33,715.80 : x
  2. Step 2: Convert to fraction form
    67,079.70/100,631.70 = 33,715.80/x
  3. Step 3: Cross multiply
    67,079.70x = 100,631.70 × 33,715.80
  4. Step 4: Simplify right side
    67,079.70x = 3,392,878,270.86
  5. Step 5: Solve for x
    x = 3,392,878,270.86/67,079.70
  6. Step 6: Final answer
    x = 50,579.81

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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.