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Finding the Fourth Proportional to 90,655.80, 135,984.60 and 27,476.07

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Solution

The fourth proportional to 90,655.80, 135,984.60 and 27,476.07 is: 41,214.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,655.80 : 135,984.60 = 27,476.07 : x
  2. Step 2: Convert to fraction form
    90,655.80/135,984.60 = 27,476.07/x
  3. Step 3: Cross multiply
    90,655.80x = 135,984.60 × 27,476.07
  4. Step 4: Simplify right side
    90,655.80x = 3,736,322,388.52
  5. Step 5: Solve for x
    x = 3,736,322,388.52/90,655.80
  6. Step 6: Final answer
    x = 41,214.38

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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.