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Finding the Fourth Proportional to 110,489.70, 165,734.55 and 40,419.30

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Solution

The fourth proportional to 110,489.70, 165,734.55 and 40,419.30 is: 60,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,489.70 : 165,734.55 = 40,419.30 : x
  2. Step 2: Convert to fraction form
    110,489.70/165,734.55 = 40,419.30/x
  3. Step 3: Cross multiply
    110,489.70x = 165,734.55 × 40,419.30
  4. Step 4: Simplify right side
    110,489.70x = 6,698,874,496.82
  5. Step 5: Solve for x
    x = 6,698,874,496.82/110,489.70
  6. Step 6: Final answer
    x = 60,628.95

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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.