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Finding the Fourth Proportional to 90,211, 135,317.06 and 23,650.53

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Solution

The fourth proportional to 90,211, 135,317.06 and 23,650.53 is: 35,475.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,211 : 135,317.06 = 23,650.53 : x
  2. Step 2: Convert to fraction form
    90,211/135,317.06 = 23,650.53/x
  3. Step 3: Cross multiply
    90,211x = 135,317.06 × 23,650.53
  4. Step 4: Simplify right side
    90,211x = 3,200,320,187.04
  5. Step 5: Solve for x
    x = 3,200,320,187.04/90,211
  6. Step 6: Final answer
    x = 35,475.94

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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.