Home / 68,067.99-93,920.06-39,768.21

Finding the Fourth Proportional to 68,067.99, 93,920.06 and 39,768.21

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Solution

The fourth proportional to 68,067.99, 93,920.06 and 39,768.21 is: 54,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,067.99 : 93,920.06 = 39,768.21 : x
  2. Step 2: Convert to fraction form
    68,067.99/93,920.06 = 39,768.21/x
  3. Step 3: Cross multiply
    68,067.99x = 93,920.06 × 39,768.21
  4. Step 4: Simplify right side
    68,067.99x = 3,735,032,470.45
  5. Step 5: Solve for x
    x = 3,735,032,470.45/68,067.99
  6. Step 6: Final answer
    x = 54,872.08

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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.