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Finding the Fourth Proportional to 84,668.60, 127,001.64 and 20,627.48

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Solution

The fourth proportional to 84,668.60, 127,001.64 and 20,627.48 is: 30,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,668.60 : 127,001.64 = 20,627.48 : x
  2. Step 2: Convert to fraction form
    84,668.60/127,001.64 = 20,627.48/x
  3. Step 3: Cross multiply
    84,668.60x = 127,001.64 × 20,627.48
  4. Step 4: Simplify right side
    84,668.60x = 2,619,723,789.07
  5. Step 5: Solve for x
    x = 2,619,723,789.07/84,668.60
  6. Step 6: Final answer
    x = 30,940.91

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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.