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Finding the Fourth Proportional to 90,776.75, 135,829.22 and 54,774.08

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Solution

The fourth proportional to 90,776.75, 135,829.22 and 54,774.08 is: 81,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,776.75 : 135,829.22 = 54,774.08 : x
  2. Step 2: Convert to fraction form
    90,776.75/135,829.22 = 54,774.08/x
  3. Step 3: Cross multiply
    90,776.75x = 135,829.22 × 54,774.08
  4. Step 4: Simplify right side
    90,776.75x = 7,439,919,609.60
  5. Step 5: Solve for x
    x = 7,439,919,609.60/90,776.75
  6. Step 6: Final answer
    x = 81,958.43

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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.