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Finding the Fourth Proportional to 45,174.84, 67,787.37 and 20,213.88

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Solution

The fourth proportional to 45,174.84, 67,787.37 and 20,213.88 is: 30,332.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,174.84 : 67,787.37 = 20,213.88 : x
  2. Step 2: Convert to fraction form
    45,174.84/67,787.37 = 20,213.88/x
  3. Step 3: Cross multiply
    45,174.84x = 67,787.37 × 20,213.88
  4. Step 4: Simplify right side
    45,174.84x = 1,370,245,762.70
  5. Step 5: Solve for x
    x = 1,370,245,762.70/45,174.84
  6. Step 6: Final answer
    x = 30,332.06

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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.