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Finding the Fourth Proportional to 68,806.16, 103,207.08 and 19,558.16

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Solution

The fourth proportional to 68,806.16, 103,207.08 and 19,558.16 is: 29,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,806.16 : 103,207.08 = 19,558.16 : x
  2. Step 2: Convert to fraction form
    68,806.16/103,207.08 = 19,558.16/x
  3. Step 3: Cross multiply
    68,806.16x = 103,207.08 × 19,558.16
  4. Step 4: Simplify right side
    68,806.16x = 2,018,540,583.77
  5. Step 5: Solve for x
    x = 2,018,540,583.77/68,806.16
  6. Step 6: Final answer
    x = 29,336.63

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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.