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Finding the Fourth Proportional to 69,411.58, 104,121.62 and 19,495.74

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Solution

The fourth proportional to 69,411.58, 104,121.62 and 19,495.74 is: 29,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,411.58 : 104,121.62 = 19,495.74 : x
  2. Step 2: Convert to fraction form
    69,411.58/104,121.62 = 19,495.74/x
  3. Step 3: Cross multiply
    69,411.58x = 104,121.62 × 19,495.74
  4. Step 4: Simplify right side
    69,411.58x = 2,029,928,031.90
  5. Step 5: Solve for x
    x = 2,029,928,031.90/69,411.58
  6. Step 6: Final answer
    x = 29,244.80

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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.