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Finding the Fourth Proportional to 69,832.49, 104,754.90 and 19,911.51

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Solution

The fourth proportional to 69,832.49, 104,754.90 and 19,911.51 is: 29,869.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,832.49 : 104,754.90 = 19,911.51 : x
  2. Step 2: Convert to fraction form
    69,832.49/104,754.90 = 19,911.51/x
  3. Step 3: Cross multiply
    69,832.49x = 104,754.90 × 19,911.51
  4. Step 4: Simplify right side
    69,832.49x = 2,085,828,238.90
  5. Step 5: Solve for x
    x = 2,085,828,238.90/69,832.49
  6. Step 6: Final answer
    x = 29,869.02

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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.