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Finding the Fourth Proportional to 66,563.30, 91,853.93 and 36,342.80

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Solution

The fourth proportional to 66,563.30, 91,853.93 and 36,342.80 is: 50,151.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,563.30 : 91,853.93 = 36,342.80 : x
  2. Step 2: Convert to fraction form
    66,563.30/91,853.93 = 36,342.80/x
  3. Step 3: Cross multiply
    66,563.30x = 91,853.93 × 36,342.80
  4. Step 4: Simplify right side
    66,563.30x = 3,338,228,366.22
  5. Step 5: Solve for x
    x = 3,338,228,366.22/66,563.30
  6. Step 6: Final answer
    x = 50,151.19

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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.