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Finding the Fourth Proportional to 110,408.59, 165,615.60 and 40,287.88

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Solution

The fourth proportional to 110,408.59, 165,615.60 and 40,287.88 is: 60,432.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,408.59 : 165,615.60 = 40,287.88 : x
  2. Step 2: Convert to fraction form
    110,408.59/165,615.60 = 40,287.88/x
  3. Step 3: Cross multiply
    110,408.59x = 165,615.60 × 40,287.88
  4. Step 4: Simplify right side
    110,408.59x = 6,672,300,590.85
  5. Step 5: Solve for x
    x = 6,672,300,590.85/110,408.59
  6. Step 6: Final answer
    x = 60,432.81

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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.