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Finding the Fourth Proportional to 69,677.84, 104,509.64 and 19,081.37

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Solution

The fourth proportional to 69,677.84, 104,509.64 and 19,081.37 is: 28,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,677.84 : 104,509.64 = 19,081.37 : x
  2. Step 2: Convert to fraction form
    69,677.84/104,509.64 = 19,081.37/x
  3. Step 3: Cross multiply
    69,677.84x = 104,509.64 × 19,081.37
  4. Step 4: Simplify right side
    69,677.84x = 1,994,187,418.38
  5. Step 5: Solve for x
    x = 1,994,187,418.38/69,677.84
  6. Step 6: Final answer
    x = 28,620.11

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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.