Home / 67,286.31-100,896.64-38,431.59

Finding the Fourth Proportional to 67,286.31, 100,896.64 and 38,431.59

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Solution

The fourth proportional to 67,286.31, 100,896.64 and 38,431.59 is: 57,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,286.31 : 100,896.64 = 38,431.59 : x
  2. Step 2: Convert to fraction form
    67,286.31/100,896.64 = 38,431.59/x
  3. Step 3: Cross multiply
    67,286.31x = 100,896.64 × 38,431.59
  4. Step 4: Simplify right side
    67,286.31x = 3,877,618,300.86
  5. Step 5: Solve for x
    x = 3,877,618,300.86/67,286.31
  6. Step 6: Final answer
    x = 57,628.64

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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.