Home / 68,633.63-102,947.40-18,713.75

Finding the Fourth Proportional to 68,633.63, 102,947.40 and 18,713.75

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Solution

The fourth proportional to 68,633.63, 102,947.40 and 18,713.75 is: 28,069.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,633.63 : 102,947.40 = 18,713.75 : x
  2. Step 2: Convert to fraction form
    68,633.63/102,947.40 = 18,713.75/x
  3. Step 3: Cross multiply
    68,633.63x = 102,947.40 × 18,713.75
  4. Step 4: Simplify right side
    68,633.63x = 1,926,531,906.75
  5. Step 5: Solve for x
    x = 1,926,531,906.75/68,633.63
  6. Step 6: Final answer
    x = 28,069.79

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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.