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Finding the Fourth Proportional to 67,237.99, 100,867.92 and 19,857.87

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Solution

The fourth proportional to 67,237.99, 100,867.92 and 19,857.87 is: 29,790.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,237.99 : 100,867.92 = 19,857.87 : x
  2. Step 2: Convert to fraction form
    67,237.99/100,867.92 = 19,857.87/x
  3. Step 3: Cross multiply
    67,237.99x = 100,867.92 × 19,857.87
  4. Step 4: Simplify right side
    67,237.99x = 2,003,022,042.53
  5. Step 5: Solve for x
    x = 2,003,022,042.53/67,237.99
  6. Step 6: Final answer
    x = 29,790.04

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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.