Home / 68,121.12-94,018.44-39,821.34

Finding the Fourth Proportional to 68,121.12, 94,018.44 and 39,821.34

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Solution

The fourth proportional to 68,121.12, 94,018.44 and 39,821.34 is: 54,960.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.12 : 94,018.44 = 39,821.34 : x
  2. Step 2: Convert to fraction form
    68,121.12/94,018.44 = 39,821.34/x
  3. Step 3: Cross multiply
    68,121.12x = 94,018.44 × 39,821.34
  4. Step 4: Simplify right side
    68,121.12x = 3,743,940,265.51
  5. Step 5: Solve for x
    x = 3,743,940,265.51/68,121.12
  6. Step 6: Final answer
    x = 54,960.05

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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.