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Finding the Fourth Proportional to 110,480.80, 165,745.20 and 40,360

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Solution

The fourth proportional to 110,480.80, 165,745.20 and 40,360 is: 60,548.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,480.80 : 165,745.20 = 40,360 : x
  2. Step 2: Convert to fraction form
    110,480.80/165,745.20 = 40,360/x
  3. Step 3: Cross multiply
    110,480.80x = 165,745.20 × 40,360
  4. Step 4: Simplify right side
    110,480.80x = 6,689,476,272
  5. Step 5: Solve for x
    x = 6,689,476,272/110,480.80
  6. Step 6: Final answer
    x = 60,548.77

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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.