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Finding the Fourth Proportional to 36,857.93, 55,243.14 and 21,243.29

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Solution

The fourth proportional to 36,857.93, 55,243.14 and 21,243.29 is: 31,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,857.93 : 55,243.14 = 21,243.29 : x
  2. Step 2: Convert to fraction form
    36,857.93/55,243.14 = 21,243.29/x
  3. Step 3: Cross multiply
    36,857.93x = 55,243.14 × 21,243.29
  4. Step 4: Simplify right side
    36,857.93x = 1,173,546,043.53
  5. Step 5: Solve for x
    x = 1,173,546,043.53/36,857.93
  6. Step 6: Final answer
    x = 31,839.72

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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.