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Finding the Fourth Proportional to 90,671.88, 135,955.50 and 35,203.08

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Solution

The fourth proportional to 90,671.88, 135,955.50 and 35,203.08 is: 52,784.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,671.88 : 135,955.50 = 35,203.08 : x
  2. Step 2: Convert to fraction form
    90,671.88/135,955.50 = 35,203.08/x
  3. Step 3: Cross multiply
    90,671.88x = 135,955.50 × 35,203.08
  4. Step 4: Simplify right side
    90,671.88x = 4,786,052,342.94
  5. Step 5: Solve for x
    x = 4,786,052,342.94/90,671.88
  6. Step 6: Final answer
    x = 52,784.31

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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.