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Finding the Fourth Proportional to 90,253.80, 135,379.08 and 36,934.20

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Solution

The fourth proportional to 90,253.80, 135,379.08 and 36,934.20 is: 55,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,253.80 : 135,379.08 = 36,934.20 : x
  2. Step 2: Convert to fraction form
    90,253.80/135,379.08 = 36,934.20/x
  3. Step 3: Cross multiply
    90,253.80x = 135,379.08 × 36,934.20
  4. Step 4: Simplify right side
    90,253.80x = 5,000,118,016.54
  5. Step 5: Solve for x
    x = 5,000,118,016.54/90,253.80
  6. Step 6: Final answer
    x = 55,400.64

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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.