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Finding the Fourth Proportional to 69,805.14, 104,706.35 and 19,885.56

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Solution

The fourth proportional to 69,805.14, 104,706.35 and 19,885.56 is: 29,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,805.14 : 104,706.35 = 19,885.56 : x
  2. Step 2: Convert to fraction form
    69,805.14/104,706.35 = 19,885.56/x
  3. Step 3: Cross multiply
    69,805.14x = 104,706.35 × 19,885.56
  4. Step 4: Simplify right side
    69,805.14x = 2,082,144,305.88
  5. Step 5: Solve for x
    x = 2,082,144,305.88/69,805.14
  6. Step 6: Final answer
    x = 29,827.95

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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.