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Finding the Fourth Proportional to 90,670.88, 135,954 and 35,202.08

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Solution

The fourth proportional to 90,670.88, 135,954 and 35,202.08 is: 52,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,670.88 : 135,954 = 35,202.08 : x
  2. Step 2: Convert to fraction form
    90,670.88/135,954 = 35,202.08/x
  3. Step 3: Cross multiply
    90,670.88x = 135,954 × 35,202.08
  4. Step 4: Simplify right side
    90,670.88x = 4,785,863,584.32
  5. Step 5: Solve for x
    x = 4,785,863,584.32/90,670.88
  6. Step 6: Final answer
    x = 52,782.81

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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.