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Finding the Fourth Proportional to 71,063.85, 106,662.75 and 52,286.63

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Solution

The fourth proportional to 71,063.85, 106,662.75 and 52,286.63 is: 78,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,063.85 : 106,662.75 = 52,286.63 : x
  2. Step 2: Convert to fraction form
    71,063.85/106,662.75 = 52,286.63/x
  3. Step 3: Cross multiply
    71,063.85x = 106,662.75 × 52,286.63
  4. Step 4: Simplify right side
    71,063.85x = 5,577,035,744.03
  5. Step 5: Solve for x
    x = 5,577,035,744.03/71,063.85
  6. Step 6: Final answer
    x = 78,479.22

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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.