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Finding the Fourth Proportional to 69,661.44, 96,131.82 and 39,446.40

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Solution

The fourth proportional to 69,661.44, 96,131.82 and 39,446.40 is: 54,435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,661.44 : 96,131.82 = 39,446.40 : x
  2. Step 2: Convert to fraction form
    69,661.44/96,131.82 = 39,446.40/x
  3. Step 3: Cross multiply
    69,661.44x = 96,131.82 × 39,446.40
  4. Step 4: Simplify right side
    69,661.44x = 3,792,054,224.45
  5. Step 5: Solve for x
    x = 3,792,054,224.45/69,661.44
  6. Step 6: Final answer
    x = 54,435.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.