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Finding the Fourth Proportional to 69,969.87, 96,561.03 and 39,760.32

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Solution

The fourth proportional to 69,969.87, 96,561.03 and 39,760.32 is: 54,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,969.87 : 96,561.03 = 39,760.32 : x
  2. Step 2: Convert to fraction form
    69,969.87/96,561.03 = 39,760.32/x
  3. Step 3: Cross multiply
    69,969.87x = 96,561.03 × 39,760.32
  4. Step 4: Simplify right side
    69,969.87x = 3,839,297,452.33
  5. Step 5: Solve for x
    x = 3,839,297,452.33/69,969.87
  6. Step 6: Final answer
    x = 54,870.72

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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.