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Finding the Fourth Proportional to 45,143.69, 67,781.21 and 33,333.89

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Solution

The fourth proportional to 45,143.69, 67,781.21 and 33,333.89 is: 50,049.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,143.69 : 67,781.21 = 33,333.89 : x
  2. Step 2: Convert to fraction form
    45,143.69/67,781.21 = 33,333.89/x
  3. Step 3: Cross multiply
    45,143.69x = 67,781.21 × 33,333.89
  4. Step 4: Simplify right side
    45,143.69x = 2,259,410,892.63
  5. Step 5: Solve for x
    x = 2,259,410,892.63/45,143.69
  6. Step 6: Final answer
    x = 50,049.32

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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.