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Finding the Fourth Proportional to 68,798.76, 103,197.69 and 18,874.95

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Solution

The fourth proportional to 68,798.76, 103,197.69 and 18,874.95 is: 28,312.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,798.76 : 103,197.69 = 18,874.95 : x
  2. Step 2: Convert to fraction form
    68,798.76/103,197.69 = 18,874.95/x
  3. Step 3: Cross multiply
    68,798.76x = 103,197.69 × 18,874.95
  4. Step 4: Simplify right side
    68,798.76x = 1,947,851,238.87
  5. Step 5: Solve for x
    x = 1,947,851,238.87/68,798.76
  6. Step 6: Final answer
    x = 28,312.30

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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.