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Finding the Fourth Proportional to 90,570.96, 135,883.44 and 43,221.60

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Solution

The fourth proportional to 90,570.96, 135,883.44 and 43,221.60 is: 64,845.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,570.96 : 135,883.44 = 43,221.60 : x
  2. Step 2: Convert to fraction form
    90,570.96/135,883.44 = 43,221.60/x
  3. Step 3: Cross multiply
    90,570.96x = 135,883.44 × 43,221.60
  4. Step 4: Simplify right side
    90,570.96x = 5,873,099,690.30
  5. Step 5: Solve for x
    x = 5,873,099,690.30/90,570.96
  6. Step 6: Final answer
    x = 64,845.28

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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.