Home / 74,287.20-111,338.64-36,806.88

Finding the Fourth Proportional to 74,287.20, 111,338.64 and 36,806.88

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Solution

The fourth proportional to 74,287.20, 111,338.64 and 36,806.88 is: 55,164.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,287.20 : 111,338.64 = 36,806.88 : x
  2. Step 2: Convert to fraction form
    74,287.20/111,338.64 = 36,806.88/x
  3. Step 3: Cross multiply
    74,287.20x = 111,338.64 × 36,806.88
  4. Step 4: Simplify right side
    74,287.20x = 4,098,027,961.84
  5. Step 5: Solve for x
    x = 4,098,027,961.84/74,287.20
  6. Step 6: Final answer
    x = 55,164.66

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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.