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Finding the Fourth Proportional to 69,418.83, 104,127.90 and 16,828.32

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Solution

The fourth proportional to 69,418.83, 104,127.90 and 16,828.32 is: 25,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,418.83 : 104,127.90 = 16,828.32 : x
  2. Step 2: Convert to fraction form
    69,418.83/104,127.90 = 16,828.32/x
  3. Step 3: Cross multiply
    69,418.83x = 104,127.90 × 16,828.32
  4. Step 4: Simplify right side
    69,418.83x = 1,752,297,622.13
  5. Step 5: Solve for x
    x = 1,752,297,622.13/69,418.83
  6. Step 6: Final answer
    x = 25,242.40

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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.