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Finding the Fourth Proportional to 67,244.20, 100,880.70 and 20,501.80

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Solution

The fourth proportional to 67,244.20, 100,880.70 and 20,501.80 is: 30,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,244.20 : 100,880.70 = 20,501.80 : x
  2. Step 2: Convert to fraction form
    67,244.20/100,880.70 = 20,501.80/x
  3. Step 3: Cross multiply
    67,244.20x = 100,880.70 × 20,501.80
  4. Step 4: Simplify right side
    67,244.20x = 2,068,235,935.26
  5. Step 5: Solve for x
    x = 2,068,235,935.26/67,244.20
  6. Step 6: Final answer
    x = 30,757.09

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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.