Home / 56,918.82-85,382.36-21,858.47

Finding the Fourth Proportional to 56,918.82, 85,382.36 and 21,858.47

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Solution

The fourth proportional to 56,918.82, 85,382.36 and 21,858.47 is: 32,789.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918.82 : 85,382.36 = 21,858.47 : x
  2. Step 2: Convert to fraction form
    56,918.82/85,382.36 = 21,858.47/x
  3. Step 3: Cross multiply
    56,918.82x = 85,382.36 × 21,858.47
  4. Step 4: Simplify right side
    56,918.82x = 1,866,327,218.39
  5. Step 5: Solve for x
    x = 1,866,327,218.39/56,918.82
  6. Step 6: Final answer
    x = 32,789.28

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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.