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Finding the Fourth Proportional to 69,312.97, 103,976.00 and 19,393.07

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Solution

The fourth proportional to 69,312.97, 103,976.00 and 19,393.07 is: 29,091.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,312.97 : 103,976.00 = 19,393.07 : x
  2. Step 2: Convert to fraction form
    69,312.97/103,976.00 = 19,393.07/x
  3. Step 3: Cross multiply
    69,312.97x = 103,976.00 × 19,393.07
  4. Step 4: Simplify right side
    69,312.97x = 2,016,413,749.35
  5. Step 5: Solve for x
    x = 2,016,413,749.35/69,312.97
  6. Step 6: Final answer
    x = 29,091.44

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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.