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Finding the Fourth Proportional to 88,033.85, 132,050.78 and 81,813.05

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Solution

The fourth proportional to 88,033.85, 132,050.78 and 81,813.05 is: 122,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,033.85 : 132,050.78 = 81,813.05 : x
  2. Step 2: Convert to fraction form
    88,033.85/132,050.78 = 81,813.05/x
  3. Step 3: Cross multiply
    88,033.85x = 132,050.78 × 81,813.05
  4. Step 4: Simplify right side
    88,033.85x = 10,803,476,657.61
  5. Step 5: Solve for x
    x = 10,803,476,657.61/88,033.85
  6. Step 6: Final answer
    x = 122,719.58

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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.