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Finding the Fourth Proportional to 103,662.20, 155,493.30 and 33,539.78

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Solution

The fourth proportional to 103,662.20, 155,493.30 and 33,539.78 is: 50,309.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,662.20 : 155,493.30 = 33,539.78 : x
  2. Step 2: Convert to fraction form
    103,662.20/155,493.30 = 33,539.78/x
  3. Step 3: Cross multiply
    103,662.20x = 155,493.30 × 33,539.78
  4. Step 4: Simplify right side
    103,662.20x = 5,215,211,073.47
  5. Step 5: Solve for x
    x = 5,215,211,073.47/103,662.20
  6. Step 6: Final answer
    x = 50,309.67

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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.