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Finding the Fourth Proportional to 69,784.68, 104,661.29 and 19,863.67

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Solution

The fourth proportional to 69,784.68, 104,661.29 and 19,863.67 is: 29,791.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,784.68 : 104,661.29 = 19,863.67 : x
  2. Step 2: Convert to fraction form
    69,784.68/104,661.29 = 19,863.67/x
  3. Step 3: Cross multiply
    69,784.68x = 104,661.29 × 19,863.67
  4. Step 4: Simplify right side
    69,784.68x = 2,078,957,114.34
  5. Step 5: Solve for x
    x = 2,078,957,114.34/69,784.68
  6. Step 6: Final answer
    x = 29,791.02

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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.