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Finding the Fourth Proportional to 69,854.75, 96,396.68 and 39,639.44

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Solution

The fourth proportional to 69,854.75, 96,396.68 and 39,639.44 is: 54,700.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,854.75 : 96,396.68 = 39,639.44 : x
  2. Step 2: Convert to fraction form
    69,854.75/96,396.68 = 39,639.44/x
  3. Step 3: Cross multiply
    69,854.75x = 96,396.68 × 39,639.44
  4. Step 4: Simplify right side
    69,854.75x = 3,821,109,732.88
  5. Step 5: Solve for x
    x = 3,821,109,732.88/69,854.75
  6. Step 6: Final answer
    x = 54,700.79

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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.