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Finding the Fourth Proportional to 65,797.11, 90,771.03 and 41,918.31

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Solution

The fourth proportional to 65,797.11, 90,771.03 and 41,918.31 is: 57,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,797.11 : 90,771.03 = 41,918.31 : x
  2. Step 2: Convert to fraction form
    65,797.11/90,771.03 = 41,918.31/x
  3. Step 3: Cross multiply
    65,797.11x = 90,771.03 × 41,918.31
  4. Step 4: Simplify right side
    65,797.11x = 3,804,968,174.56
  5. Step 5: Solve for x
    x = 3,804,968,174.56/65,797.11
  6. Step 6: Final answer
    x = 57,828.80

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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.