Home / 67,511.47-101,268.83-20,764.75

Finding the Fourth Proportional to 67,511.47, 101,268.83 and 20,764.75

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Solution

The fourth proportional to 67,511.47, 101,268.83 and 20,764.75 is: 31,147.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,511.47 : 101,268.83 = 20,764.75 : x
  2. Step 2: Convert to fraction form
    67,511.47/101,268.83 = 20,764.75/x
  3. Step 3: Cross multiply
    67,511.47x = 101,268.83 × 20,764.75
  4. Step 4: Simplify right side
    67,511.47x = 2,102,821,833.92
  5. Step 5: Solve for x
    x = 2,102,821,833.92/67,511.47
  6. Step 6: Final answer
    x = 31,147.62

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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.