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Finding the Fourth Proportional to 69,405.80, 104,084.40 and 36,114.80

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Solution

The fourth proportional to 69,405.80, 104,084.40 and 36,114.80 is: 54,159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405.80 : 104,084.40 = 36,114.80 : x
  2. Step 2: Convert to fraction form
    69,405.80/104,084.40 = 36,114.80/x
  3. Step 3: Cross multiply
    69,405.80x = 104,084.40 × 36,114.80
  4. Step 4: Simplify right side
    69,405.80x = 3,758,987,289.12
  5. Step 5: Solve for x
    x = 3,758,987,289.12/69,405.80
  6. Step 6: Final answer
    x = 54,159.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.