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Finding the Fourth Proportional to 89,811.20, 134,716.80 and 23,250.80

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Solution

The fourth proportional to 89,811.20, 134,716.80 and 23,250.80 is: 34,876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,811.20 : 134,716.80 = 23,250.80 : x
  2. Step 2: Convert to fraction form
    89,811.20/134,716.80 = 23,250.80/x
  3. Step 3: Cross multiply
    89,811.20x = 134,716.80 × 23,250.80
  4. Step 4: Simplify right side
    89,811.20x = 3,132,273,373.44
  5. Step 5: Solve for x
    x = 3,132,273,373.44/89,811.20
  6. Step 6: Final answer
    x = 34,876.20

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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.