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Finding the Fourth Proportional to 90,131.16, 135,215.79 and 33,970.08

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Solution

The fourth proportional to 90,131.16, 135,215.79 and 33,970.08 is: 50,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131.16 : 135,215.79 = 33,970.08 : x
  2. Step 2: Convert to fraction form
    90,131.16/135,215.79 = 33,970.08/x
  3. Step 3: Cross multiply
    90,131.16x = 135,215.79 × 33,970.08
  4. Step 4: Simplify right side
    90,131.16x = 4,593,291,203.56
  5. Step 5: Solve for x
    x = 4,593,291,203.56/90,131.16
  6. Step 6: Final answer
    x = 50,962.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.