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Finding the Fourth Proportional to 89,961.60, 134,877.60 and 50,530.80

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Solution

The fourth proportional to 89,961.60, 134,877.60 and 50,530.80 is: 75,759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,961.60 : 134,877.60 = 50,530.80 : x
  2. Step 2: Convert to fraction form
    89,961.60/134,877.60 = 50,530.80/x
  3. Step 3: Cross multiply
    89,961.60x = 134,877.60 × 50,530.80
  4. Step 4: Simplify right side
    89,961.60x = 6,815,473,030.08
  5. Step 5: Solve for x
    x = 6,815,473,030.08/89,961.60
  6. Step 6: Final answer
    x = 75,759.80

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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.