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Finding the Fourth Proportional to 68,804.58, 103,206.96 and 18,885.36

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Solution

The fourth proportional to 68,804.58, 103,206.96 and 18,885.36 is: 28,328.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,804.58 : 103,206.96 = 18,885.36 : x
  2. Step 2: Convert to fraction form
    68,804.58/103,206.96 = 18,885.36/x
  3. Step 3: Cross multiply
    68,804.58x = 103,206.96 × 18,885.36
  4. Step 4: Simplify right side
    68,804.58x = 1,949,100,594.11
  5. Step 5: Solve for x
    x = 1,949,100,594.11/68,804.58
  6. Step 6: Final answer
    x = 28,328.06

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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.