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Finding the Fourth Proportional to 71,349.85, 107,016.27 and 18,763.44

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Solution

The fourth proportional to 71,349.85, 107,016.27 and 18,763.44 is: 28,142.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,349.85 : 107,016.27 = 18,763.44 : x
  2. Step 2: Convert to fraction form
    71,349.85/107,016.27 = 18,763.44/x
  3. Step 3: Cross multiply
    71,349.85x = 107,016.27 × 18,763.44
  4. Step 4: Simplify right side
    71,349.85x = 2,007,993,361.17
  5. Step 5: Solve for x
    x = 2,007,993,361.17/71,349.85
  6. Step 6: Final answer
    x = 28,142.92

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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.