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Finding the Fourth Proportional to 69,117.84, 103,679.48 and 19,198.19

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Solution

The fourth proportional to 69,117.84, 103,679.48 and 19,198.19 is: 28,798.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,117.84 : 103,679.48 = 19,198.19 : x
  2. Step 2: Convert to fraction form
    69,117.84/103,679.48 = 19,198.19/x
  3. Step 3: Cross multiply
    69,117.84x = 103,679.48 × 19,198.19
  4. Step 4: Simplify right side
    69,117.84x = 1,990,458,663.34
  5. Step 5: Solve for x
    x = 1,990,458,663.34/69,117.84
  6. Step 6: Final answer
    x = 28,798.04

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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.