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Finding the Fourth Proportional to 71,118.66, 106,684.10 and 18,528.06

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Solution

The fourth proportional to 71,118.66, 106,684.10 and 18,528.06 is: 27,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,118.66 : 106,684.10 = 18,528.06 : x
  2. Step 2: Convert to fraction form
    71,118.66/106,684.10 = 18,528.06/x
  3. Step 3: Cross multiply
    71,118.66x = 106,684.10 × 18,528.06
  4. Step 4: Simplify right side
    71,118.66x = 1,976,649,405.85
  5. Step 5: Solve for x
    x = 1,976,649,405.85/71,118.66
  6. Step 6: Final answer
    x = 27,793.68

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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.