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Finding the Fourth Proportional to 90,367.67, 135,583.77 and 54,901.34

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Solution

The fourth proportional to 90,367.67, 135,583.77 and 54,901.34 is: 82,371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,367.67 : 135,583.77 = 54,901.34 : x
  2. Step 2: Convert to fraction form
    90,367.67/135,583.77 = 54,901.34/x
  3. Step 3: Cross multiply
    90,367.67x = 135,583.77 × 54,901.34
  4. Step 4: Simplify right side
    90,367.67x = 7,443,729,977.33
  5. Step 5: Solve for x
    x = 7,443,729,977.33/90,367.67
  6. Step 6: Final answer
    x = 82,371.61

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1.5x scale

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.