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Finding the Fourth Proportional to 91,743, 137,637.62 and 26,079

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Solution

The fourth proportional to 91,743, 137,637.62 and 26,079 is: 39,125.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,743 : 137,637.62 = 26,079 : x
  2. Step 2: Convert to fraction form
    91,743/137,637.62 = 26,079/x
  3. Step 3: Cross multiply
    91,743x = 137,637.62 × 26,079
  4. Step 4: Simplify right side
    91,743x = 3,589,451,491.98
  5. Step 5: Solve for x
    x = 3,589,451,491.98/91,743
  6. Step 6: Final answer
    x = 39,125.07

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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.