Home / 74,509.13-111,769.18-21,920.90

Finding the Fourth Proportional to 74,509.13, 111,769.18 and 21,920.90

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Solution

The fourth proportional to 74,509.13, 111,769.18 and 21,920.90 is: 32,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509.13 : 111,769.18 = 21,920.90 : x
  2. Step 2: Convert to fraction form
    74,509.13/111,769.18 = 21,920.90/x
  3. Step 3: Cross multiply
    74,509.13x = 111,769.18 × 21,920.90
  4. Step 4: Simplify right side
    74,509.13x = 2,450,080,404.21
  5. Step 5: Solve for x
    x = 2,450,080,404.21/74,509.13
  6. Step 6: Final answer
    x = 32,882.95

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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.