Home / 67,918.32-101,883.09-21,171.20

Finding the Fourth Proportional to 67,918.32, 101,883.09 and 21,171.20

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Solution

The fourth proportional to 67,918.32, 101,883.09 and 21,171.20 is: 31,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,918.32 : 101,883.09 = 21,171.20 : x
  2. Step 2: Convert to fraction form
    67,918.32/101,883.09 = 21,171.20/x
  3. Step 3: Cross multiply
    67,918.32x = 101,883.09 × 21,171.20
  4. Step 4: Simplify right side
    67,918.32x = 2,156,986,765.59
  5. Step 5: Solve for x
    x = 2,156,986,765.59/67,918.32
  6. Step 6: Final answer
    x = 31,758.54

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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.