Home / 68,741.60-103,112.32-18,822.08

Finding the Fourth Proportional to 68,741.60, 103,112.32 and 18,822.08

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Solution

The fourth proportional to 68,741.60, 103,112.32 and 18,822.08 is: 28,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,741.60 : 103,112.32 = 18,822.08 : x
  2. Step 2: Convert to fraction form
    68,741.60/103,112.32 = 18,822.08/x
  3. Step 3: Cross multiply
    68,741.60x = 103,112.32 × 18,822.08
  4. Step 4: Simplify right side
    68,741.60x = 1,940,788,336.03
  5. Step 5: Solve for x
    x = 1,940,788,336.03/68,741.60
  6. Step 6: Final answer
    x = 28,233.10

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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.