Home / 74,471.38-111,786.65-30,127.12

Finding the Fourth Proportional to 74,471.38, 111,786.65 and 30,127.12

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Solution

The fourth proportional to 74,471.38, 111,786.65 and 30,127.12 is: 45,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,471.38 : 111,786.65 = 30,127.12 : x
  2. Step 2: Convert to fraction form
    74,471.38/111,786.65 = 30,127.12/x
  3. Step 3: Cross multiply
    74,471.38x = 111,786.65 × 30,127.12
  4. Step 4: Simplify right side
    74,471.38x = 3,367,809,501.82
  5. Step 5: Solve for x
    x = 3,367,809,501.82/74,471.38
  6. Step 6: Final answer
    x = 45,222.87

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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.