Home / 68,905.93-103,340.39-18,974.14

Finding the Fourth Proportional to 68,905.93, 103,340.39 and 18,974.14

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Solution

The fourth proportional to 68,905.93, 103,340.39 and 18,974.14 is: 28,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,905.93 : 103,340.39 = 18,974.14 : x
  2. Step 2: Convert to fraction form
    68,905.93/103,340.39 = 18,974.14/x
  3. Step 3: Cross multiply
    68,905.93x = 103,340.39 × 18,974.14
  4. Step 4: Simplify right side
    68,905.93x = 1,960,795,027.51
  5. Step 5: Solve for x
    x = 1,960,795,027.51/68,905.93
  6. Step 6: Final answer
    x = 28,456.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.