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Finding the Fourth Proportional to 88,249.88, 132,373.67 and 21,690.61

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Solution

The fourth proportional to 88,249.88, 132,373.67 and 21,690.61 is: 32,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,249.88 : 132,373.67 = 21,690.61 : x
  2. Step 2: Convert to fraction form
    88,249.88/132,373.67 = 21,690.61/x
  3. Step 3: Cross multiply
    88,249.88x = 132,373.67 × 21,690.61
  4. Step 4: Simplify right side
    88,249.88x = 2,871,265,210.85
  5. Step 5: Solve for x
    x = 2,871,265,210.85/88,249.88
  6. Step 6: Final answer
    x = 32,535.63

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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.