Home / 68,769.19-103,142.71-18,837.61

Finding the Fourth Proportional to 68,769.19, 103,142.71 and 18,837.61

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Solution

The fourth proportional to 68,769.19, 103,142.71 and 18,837.61 is: 28,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,769.19 : 103,142.71 = 18,837.61 : x
  2. Step 2: Convert to fraction form
    68,769.19/103,142.71 = 18,837.61/x
  3. Step 3: Cross multiply
    68,769.19x = 103,142.71 × 18,837.61
  4. Step 4: Simplify right side
    68,769.19x = 1,942,962,192.42
  5. Step 5: Solve for x
    x = 1,942,962,192.42/68,769.19
  6. Step 6: Final answer
    x = 28,253.38

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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.