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Finding the Fourth Proportional to 91,371.26, 136,963.53 and 51,844.88

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Solution

The fourth proportional to 91,371.26, 136,963.53 and 51,844.88 is: 77,714.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,371.26 : 136,963.53 = 51,844.88 : x
  2. Step 2: Convert to fraction form
    91,371.26/136,963.53 = 51,844.88/x
  3. Step 3: Cross multiply
    91,371.26x = 136,963.53 × 51,844.88
  4. Step 4: Simplify right side
    91,371.26x = 7,100,857,092.41
  5. Step 5: Solve for x
    x = 7,100,857,092.41/91,371.26
  6. Step 6: Final answer
    x = 77,714.34

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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.