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Finding the Fourth Proportional to 90,203.91, 135,317.82 and 33,270.15

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Solution

The fourth proportional to 90,203.91, 135,317.82 and 33,270.15 is: 49,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.91 : 135,317.82 = 33,270.15 : x
  2. Step 2: Convert to fraction form
    90,203.91/135,317.82 = 33,270.15/x
  3. Step 3: Cross multiply
    90,203.91x = 135,317.82 × 33,270.15
  4. Step 4: Simplify right side
    90,203.91x = 4,502,044,169.07
  5. Step 5: Solve for x
    x = 4,502,044,169.07/90,203.91
  6. Step 6: Final answer
    x = 49,909.63

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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.