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Finding the Fourth Proportional to 69,097.29, 103,645.94 and 19,177.40

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Solution

The fourth proportional to 69,097.29, 103,645.94 and 19,177.40 is: 28,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,097.29 : 103,645.94 = 19,177.40 : x
  2. Step 2: Convert to fraction form
    69,097.29/103,645.94 = 19,177.40/x
  3. Step 3: Cross multiply
    69,097.29x = 103,645.94 × 19,177.40
  4. Step 4: Simplify right side
    69,097.29x = 1,987,659,649.76
  5. Step 5: Solve for x
    x = 1,987,659,649.76/69,097.29
  6. Step 6: Final answer
    x = 28,766.10

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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.