Home / 90,339.21-135,469.59-48,209.91

Finding the Fourth Proportional to 90,339.21, 135,469.59 and 48,209.91

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Solution

The fourth proportional to 90,339.21, 135,469.59 and 48,209.91 is: 72,293.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.21 : 135,469.59 = 48,209.91 : x
  2. Step 2: Convert to fraction form
    90,339.21/135,469.59 = 48,209.91/x
  3. Step 3: Cross multiply
    90,339.21x = 135,469.59 × 48,209.91
  4. Step 4: Simplify right side
    90,339.21x = 6,530,976,741.64
  5. Step 5: Solve for x
    x = 6,530,976,741.64/90,339.21
  6. Step 6: Final answer
    x = 72,293.93

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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.