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Finding the Fourth Proportional to 36,076.44, 53,978.52 and 21,293.40

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Solution

The fourth proportional to 36,076.44, 53,978.52 and 21,293.40 is: 31,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,076.44 : 53,978.52 = 21,293.40 : x
  2. Step 2: Convert to fraction form
    36,076.44/53,978.52 = 21,293.40/x
  3. Step 3: Cross multiply
    36,076.44x = 53,978.52 × 21,293.40
  4. Step 4: Simplify right side
    36,076.44x = 1,149,386,217.77
  5. Step 5: Solve for x
    x = 1,149,386,217.77/36,076.44
  6. Step 6: Final answer
    x = 31,859.75

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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.