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Finding the Fourth Proportional to 67,651.30, 101,500.64 and 20,904.17

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Solution

The fourth proportional to 67,651.30, 101,500.64 and 20,904.17 is: 31,363.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,651.30 : 101,500.64 = 20,904.17 : x
  2. Step 2: Convert to fraction form
    67,651.30/101,500.64 = 20,904.17/x
  3. Step 3: Cross multiply
    67,651.30x = 101,500.64 × 20,904.17
  4. Step 4: Simplify right side
    67,651.30x = 2,121,786,529.15
  5. Step 5: Solve for x
    x = 2,121,786,529.15/67,651.30
  6. Step 6: Final answer
    x = 31,363.58

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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.