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Finding the Fourth Proportional to 89,027.60, 133,368.60 and 82,806.80

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Solution

The fourth proportional to 89,027.60, 133,368.60 and 82,806.80 is: 124,049.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,027.60 : 133,368.60 = 82,806.80 : x
  2. Step 2: Convert to fraction form
    89,027.60/133,368.60 = 82,806.80/x
  3. Step 3: Cross multiply
    89,027.60x = 133,368.60 × 82,806.80
  4. Step 4: Simplify right side
    89,027.60x = 11,043,826,986.48
  5. Step 5: Solve for x
    x = 11,043,826,986.48/89,027.60
  6. Step 6: Final answer
    x = 124,049.47

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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.