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Finding the Fourth Proportional to 69,661.45, 96,131.10 and 39,448.45

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Solution

The fourth proportional to 69,661.45, 96,131.10 and 39,448.45 is: 54,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,661.45 : 96,131.10 = 39,448.45 : x
  2. Step 2: Convert to fraction form
    69,661.45/96,131.10 = 39,448.45/x
  3. Step 3: Cross multiply
    69,661.45x = 96,131.10 × 39,448.45
  4. Step 4: Simplify right side
    69,661.45x = 3,792,222,891.80
  5. Step 5: Solve for x
    x = 3,792,222,891.80/69,661.45
  6. Step 6: Final answer
    x = 54,437.90

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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.