Home / 74,109.04-111,163.60-18,705.04

Finding the Fourth Proportional to 74,109.04, 111,163.60 and 18,705.04

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Solution

The fourth proportional to 74,109.04, 111,163.60 and 18,705.04 is: 28,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,109.04 : 111,163.60 = 18,705.04 : x
  2. Step 2: Convert to fraction form
    74,109.04/111,163.60 = 18,705.04/x
  3. Step 3: Cross multiply
    74,109.04x = 111,163.60 × 18,705.04
  4. Step 4: Simplify right side
    74,109.04x = 2,079,319,584.54
  5. Step 5: Solve for x
    x = 2,079,319,584.54/74,109.04
  6. Step 6: Final answer
    x = 28,057.57

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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.