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Finding the Fourth Proportional to 69,879.46, 104,763.84 and 65,118.64

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Solution

The fourth proportional to 69,879.46, 104,763.84 and 65,118.64 is: 97,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.46 : 104,763.84 = 65,118.64 : x
  2. Step 2: Convert to fraction form
    69,879.46/104,763.84 = 65,118.64/x
  3. Step 3: Cross multiply
    69,879.46x = 104,763.84 × 65,118.64
  4. Step 4: Simplify right side
    69,879.46x = 6,822,078,781.98
  5. Step 5: Solve for x
    x = 6,822,078,781.98/69,879.46
  6. Step 6: Final answer
    x = 97,626.38

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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.