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Finding the Fourth Proportional to 90,256.44, 135,462.42 and 43,548.60

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Solution

The fourth proportional to 90,256.44, 135,462.42 and 43,548.60 is: 65,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,256.44 : 135,462.42 = 43,548.60 : x
  2. Step 2: Convert to fraction form
    90,256.44/135,462.42 = 43,548.60/x
  3. Step 3: Cross multiply
    90,256.44x = 135,462.42 × 43,548.60
  4. Step 4: Simplify right side
    90,256.44x = 5,899,198,743.61
  5. Step 5: Solve for x
    x = 5,899,198,743.61/90,256.44
  6. Step 6: Final answer
    x = 65,360.42

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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.