Home / 74,111.35-111,147.24-20,800.19

Finding the Fourth Proportional to 74,111.35, 111,147.24 and 20,800.19

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Solution

The fourth proportional to 74,111.35, 111,147.24 and 20,800.19 is: 31,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,111.35 : 111,147.24 = 20,800.19 : x
  2. Step 2: Convert to fraction form
    74,111.35/111,147.24 = 20,800.19/x
  3. Step 3: Cross multiply
    74,111.35x = 111,147.24 × 20,800.19
  4. Step 4: Simplify right side
    74,111.35x = 2,311,883,154.24
  5. Step 5: Solve for x
    x = 2,311,883,154.24/74,111.35
  6. Step 6: Final answer
    x = 31,194.73

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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.