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Finding the Fourth Proportional to 45,380.81, 68,074.81 and 13,793.63

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Solution

The fourth proportional to 45,380.81, 68,074.81 and 13,793.63 is: 20,691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,380.81 : 68,074.81 = 13,793.63 : x
  2. Step 2: Convert to fraction form
    45,380.81/68,074.81 = 13,793.63/x
  3. Step 3: Cross multiply
    45,380.81x = 68,074.81 × 13,793.63
  4. Step 4: Simplify right side
    45,380.81x = 938,998,366.60
  5. Step 5: Solve for x
    x = 938,998,366.60/45,380.81
  6. Step 6: Final answer
    x = 20,691.53

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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.