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Finding the Fourth Proportional to 47,858, 66,044.04 and 27,986

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Solution

The fourth proportional to 47,858, 66,044.04 and 27,986 is: 38,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,858 : 66,044.04 = 27,986 : x
  2. Step 2: Convert to fraction form
    47,858/66,044.04 = 27,986/x
  3. Step 3: Cross multiply
    47,858x = 66,044.04 × 27,986
  4. Step 4: Simplify right side
    47,858x = 1,848,308,503.44
  5. Step 5: Solve for x
    x = 1,848,308,503.44/47,858
  6. Step 6: Final answer
    x = 38,620.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.