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Finding the Fourth Proportional to 127,908.20, 191,752.90 and 49,079

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Solution

The fourth proportional to 127,908.20, 191,752.90 and 49,079 is: 73,576.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,908.20 : 191,752.90 = 49,079 : x
  2. Step 2: Convert to fraction form
    127,908.20/191,752.90 = 49,079/x
  3. Step 3: Cross multiply
    127,908.20x = 191,752.90 × 49,079
  4. Step 4: Simplify right side
    127,908.20x = 9,411,040,579.10
  5. Step 5: Solve for x
    x = 9,411,040,579.10/127,908.20
  6. Step 6: Final answer
    x = 73,576.52

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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.