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Finding the Fourth Proportional to 69,888.42, 104,661.72 and 36,636.30

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Solution

The fourth proportional to 69,888.42, 104,661.72 and 36,636.30 is: 54,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,888.42 : 104,661.72 = 36,636.30 : x
  2. Step 2: Convert to fraction form
    69,888.42/104,661.72 = 36,636.30/x
  3. Step 3: Cross multiply
    69,888.42x = 104,661.72 × 36,636.30
  4. Step 4: Simplify right side
    69,888.42x = 3,834,418,172.44
  5. Step 5: Solve for x
    x = 3,834,418,172.44/69,888.42
  6. Step 6: Final answer
    x = 54,864.86

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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.