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Finding the Fourth Proportional to 110,385.55, 165,603 and 40,264.86

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Solution

The fourth proportional to 110,385.55, 165,603 and 40,264.86 is: 60,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,385.55 : 165,603 = 40,264.86 : x
  2. Step 2: Convert to fraction form
    110,385.55/165,603 = 40,264.86/x
  3. Step 3: Cross multiply
    110,385.55x = 165,603 × 40,264.86
  4. Step 4: Simplify right side
    110,385.55x = 6,667,981,610.58
  5. Step 5: Solve for x
    x = 6,667,981,610.58/110,385.55
  6. Step 6: Final answer
    x = 60,406.29

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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.