Home / 68,799.63-103,188.38-18,868.14

Finding the Fourth Proportional to 68,799.63, 103,188.38 and 18,868.14

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Solution

The fourth proportional to 68,799.63, 103,188.38 and 18,868.14 is: 28,299.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,799.63 : 103,188.38 = 18,868.14 : x
  2. Step 2: Convert to fraction form
    68,799.63/103,188.38 = 18,868.14/x
  3. Step 3: Cross multiply
    68,799.63x = 103,188.38 × 18,868.14
  4. Step 4: Simplify right side
    68,799.63x = 1,946,972,705.87
  5. Step 5: Solve for x
    x = 1,946,972,705.87/68,799.63
  6. Step 6: Final answer
    x = 28,299.17

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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.