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Finding the Fourth Proportional to 67,651.28, 101,465.04 and 20,904.56

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Solution

The fourth proportional to 67,651.28, 101,465.04 and 20,904.56 is: 31,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,651.28 : 101,465.04 = 20,904.56 : x
  2. Step 2: Convert to fraction form
    67,651.28/101,465.04 = 20,904.56/x
  3. Step 3: Cross multiply
    67,651.28x = 101,465.04 × 20,904.56
  4. Step 4: Simplify right side
    67,651.28x = 2,121,082,016.58
  5. Step 5: Solve for x
    x = 2,121,082,016.58/67,651.28
  6. Step 6: Final answer
    x = 31,353.17

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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.