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Finding the Fourth Proportional to 88,639.44, 132,846.84 and 87,702

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Solution

The fourth proportional to 88,639.44, 132,846.84 and 87,702 is: 131,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,639.44 : 132,846.84 = 87,702 : x
  2. Step 2: Convert to fraction form
    88,639.44/132,846.84 = 87,702/x
  3. Step 3: Cross multiply
    88,639.44x = 132,846.84 × 87,702
  4. Step 4: Simplify right side
    88,639.44x = 11,650,933,561.68
  5. Step 5: Solve for x
    x = 11,650,933,561.68/88,639.44
  6. Step 6: Final answer
    x = 131,441.87

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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.