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Finding the Fourth Proportional to 65,540.72, 98,311.90 and 18,794

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Solution

The fourth proportional to 65,540.72, 98,311.90 and 18,794 is: 28,191.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,540.72 : 98,311.90 = 18,794 : x
  2. Step 2: Convert to fraction form
    65,540.72/98,311.90 = 18,794/x
  3. Step 3: Cross multiply
    65,540.72x = 98,311.90 × 18,794
  4. Step 4: Simplify right side
    65,540.72x = 1,847,673,848.60
  5. Step 5: Solve for x
    x = 1,847,673,848.60/65,540.72
  6. Step 6: Final answer
    x = 28,191.24

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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.