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Finding the Fourth Proportional to 90,266.44, 135,477.42 and 43,558.60

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Solution

The fourth proportional to 90,266.44, 135,477.42 and 43,558.60 is: 65,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,266.44 : 135,477.42 = 43,558.60 : x
  2. Step 2: Convert to fraction form
    90,266.44/135,477.42 = 43,558.60/x
  3. Step 3: Cross multiply
    90,266.44x = 135,477.42 × 43,558.60
  4. Step 4: Simplify right side
    90,266.44x = 5,901,206,746.81
  5. Step 5: Solve for x
    x = 5,901,206,746.81/90,266.44
  6. Step 6: Final answer
    x = 65,375.42

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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.