Home / 56,691.12-85,033.26-21,145.44

Finding the Fourth Proportional to 56,691.12, 85,033.26 and 21,145.44

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Solution

The fourth proportional to 56,691.12, 85,033.26 and 21,145.44 is: 31,716.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,691.12 : 85,033.26 = 21,145.44 : x
  2. Step 2: Convert to fraction form
    56,691.12/85,033.26 = 21,145.44/x
  3. Step 3: Cross multiply
    56,691.12x = 85,033.26 × 21,145.44
  4. Step 4: Simplify right side
    56,691.12x = 1,798,065,697.33
  5. Step 5: Solve for x
    x = 1,798,065,697.33/56,691.12
  6. Step 6: Final answer
    x = 31,716.88

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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.