Home / 68,825.60-103,237.19-18,905.51

Finding the Fourth Proportional to 68,825.60, 103,237.19 and 18,905.51

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Solution

The fourth proportional to 68,825.60, 103,237.19 and 18,905.51 is: 28,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,825.60 : 103,237.19 = 18,905.51 : x
  2. Step 2: Convert to fraction form
    68,825.60/103,237.19 = 18,905.51/x
  3. Step 3: Cross multiply
    68,825.60x = 103,237.19 × 18,905.51
  4. Step 4: Simplify right side
    68,825.60x = 1,951,751,188.10
  5. Step 5: Solve for x
    x = 1,951,751,188.10/68,825.60
  6. Step 6: Final answer
    x = 28,357.92

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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.