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Finding the Fourth Proportional to 127,721, 191,669.52 and 44,615

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Solution

The fourth proportional to 127,721, 191,669.52 and 44,615 is: 66,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721 : 191,669.52 = 44,615 : x
  2. Step 2: Convert to fraction form
    127,721/191,669.52 = 44,615/x
  3. Step 3: Cross multiply
    127,721x = 191,669.52 × 44,615
  4. Step 4: Simplify right side
    127,721x = 8,551,335,634.80
  5. Step 5: Solve for x
    x = 8,551,335,634.80/127,721
  6. Step 6: Final answer
    x = 66,953.25

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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.