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Finding the Fourth Proportional to 91,660.32, 137,243.52 and 59,991.84

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Solution

The fourth proportional to 91,660.32, 137,243.52 and 59,991.84 is: 89,826.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,660.32 : 137,243.52 = 59,991.84 : x
  2. Step 2: Convert to fraction form
    91,660.32/137,243.52 = 59,991.84/x
  3. Step 3: Cross multiply
    91,660.32x = 137,243.52 × 59,991.84
  4. Step 4: Simplify right side
    91,660.32x = 8,233,491,292.88
  5. Step 5: Solve for x
    x = 8,233,491,292.88/91,660.32
  6. Step 6: Final answer
    x = 89,826.12

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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.