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Finding the Fourth Proportional to 65,996.55, 91,075.89 and 35,781.79

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Solution

The fourth proportional to 65,996.55, 91,075.89 and 35,781.79 is: 49,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,996.55 : 91,075.89 = 35,781.79 : x
  2. Step 2: Convert to fraction form
    65,996.55/91,075.89 = 35,781.79/x
  3. Step 3: Cross multiply
    65,996.55x = 91,075.89 × 35,781.79
  4. Step 4: Simplify right side
    65,996.55x = 3,258,858,370.04
  5. Step 5: Solve for x
    x = 3,258,858,370.04/65,996.55
  6. Step 6: Final answer
    x = 49,379.22

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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.