Home / 90,635.20-135,952.80-28,305.70

Finding the Fourth Proportional to 90,635.20, 135,952.80 and 28,305.70

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Solution

The fourth proportional to 90,635.20, 135,952.80 and 28,305.70 is: 42,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,635.20 : 135,952.80 = 28,305.70 : x
  2. Step 2: Convert to fraction form
    90,635.20/135,952.80 = 28,305.70/x
  3. Step 3: Cross multiply
    90,635.20x = 135,952.80 × 28,305.70
  4. Step 4: Simplify right side
    90,635.20x = 3,848,239,170.96
  5. Step 5: Solve for x
    x = 3,848,239,170.96/90,635.20
  6. Step 6: Final answer
    x = 42,458.55

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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.