Home / 74,078.20-111,134.58-21,488.68

Finding the Fourth Proportional to 74,078.20, 111,134.58 and 21,488.68

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Solution

The fourth proportional to 74,078.20, 111,134.58 and 21,488.68 is: 32,238.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,078.20 : 111,134.58 = 21,488.68 : x
  2. Step 2: Convert to fraction form
    74,078.20/111,134.58 = 21,488.68/x
  3. Step 3: Cross multiply
    74,078.20x = 111,134.58 × 21,488.68
  4. Step 4: Simplify right side
    74,078.20x = 2,388,135,426.55
  5. Step 5: Solve for x
    x = 2,388,135,426.55/74,078.20
  6. Step 6: Final answer
    x = 32,238.03

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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.