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Finding the Fourth Proportional to 69,919.83, 104,878.71 and 17,328.96

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Solution

The fourth proportional to 69,919.83, 104,878.71 and 17,328.96 is: 25,993.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,919.83 : 104,878.71 = 17,328.96 : x
  2. Step 2: Convert to fraction form
    69,919.83/104,878.71 = 17,328.96/x
  3. Step 3: Cross multiply
    69,919.83x = 104,878.71 × 17,328.96
  4. Step 4: Simplify right side
    69,919.83x = 1,817,438,970.44
  5. Step 5: Solve for x
    x = 1,817,438,970.44/69,919.83
  6. Step 6: Final answer
    x = 25,993.18

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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.