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Finding the Fourth Proportional to 78,203.28, 117,217.44 and 33,763.44

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Solution

The fourth proportional to 78,203.28, 117,217.44 and 33,763.44 is: 50,607.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,203.28 : 117,217.44 = 33,763.44 : x
  2. Step 2: Convert to fraction form
    78,203.28/117,217.44 = 33,763.44/x
  3. Step 3: Cross multiply
    78,203.28x = 117,217.44 × 33,763.44
  4. Step 4: Simplify right side
    78,203.28x = 3,957,664,002.39
  5. Step 5: Solve for x
    x = 3,957,664,002.39/78,203.28
  6. Step 6: Final answer
    x = 50,607.39

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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.