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Finding the Fourth Proportional to 65,234.82, 90,021.54 and 36,940.59

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Solution

The fourth proportional to 65,234.82, 90,021.54 and 36,940.59 is: 50,976.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,234.82 : 90,021.54 = 36,940.59 : x
  2. Step 2: Convert to fraction form
    65,234.82/90,021.54 = 36,940.59/x
  3. Step 3: Cross multiply
    65,234.82x = 90,021.54 × 36,940.59
  4. Step 4: Simplify right side
    65,234.82x = 3,325,448,800.31
  5. Step 5: Solve for x
    x = 3,325,448,800.31/65,234.82
  6. Step 6: Final answer
    x = 50,976.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.