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Finding the Fourth Proportional to 65,580.41, 90,489.68 and 36,896.09

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Solution

The fourth proportional to 65,580.41, 90,489.68 and 36,896.09 is: 50,910.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,580.41 : 90,489.68 = 36,896.09 : x
  2. Step 2: Convert to fraction form
    65,580.41/90,489.68 = 36,896.09/x
  3. Step 3: Cross multiply
    65,580.41x = 90,489.68 × 36,896.09
  4. Step 4: Simplify right side
    65,580.41x = 3,338,714,924.90
  5. Step 5: Solve for x
    x = 3,338,714,924.90/65,580.41
  6. Step 6: Final answer
    x = 50,910.25

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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.