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Finding the Fourth Proportional to 88,728.90, 133,093.35 and 82,313.70

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Solution

The fourth proportional to 88,728.90, 133,093.35 and 82,313.70 is: 123,470.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,728.90 : 133,093.35 = 82,313.70 : x
  2. Step 2: Convert to fraction form
    88,728.90/133,093.35 = 82,313.70/x
  3. Step 3: Cross multiply
    88,728.90x = 133,093.35 × 82,313.70
  4. Step 4: Simplify right side
    88,728.90x = 10,955,406,083.90
  5. Step 5: Solve for x
    x = 10,955,406,083.90/88,728.90
  6. Step 6: Final answer
    x = 123,470.55

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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.