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Finding the Fourth Proportional to 90,086.34, 135,023.96 and 36,745.02

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Solution

The fourth proportional to 90,086.34, 135,023.96 and 36,745.02 is: 55,074.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,086.34 : 135,023.96 = 36,745.02 : x
  2. Step 2: Convert to fraction form
    90,086.34/135,023.96 = 36,745.02/x
  3. Step 3: Cross multiply
    90,086.34x = 135,023.96 × 36,745.02
  4. Step 4: Simplify right side
    90,086.34x = 4,961,457,926.95
  5. Step 5: Solve for x
    x = 4,961,457,926.95/90,086.34
  6. Step 6: Final answer
    x = 55,074.48

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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.