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Finding the Fourth Proportional to 68,805.76, 103,209.60 and 19,557.76

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Solution

The fourth proportional to 68,805.76, 103,209.60 and 19,557.76 is: 29,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,805.76 : 103,209.60 = 19,557.76 : x
  2. Step 2: Convert to fraction form
    68,805.76/103,209.60 = 19,557.76/x
  3. Step 3: Cross multiply
    68,805.76x = 103,209.60 × 19,557.76
  4. Step 4: Simplify right side
    68,805.76x = 2,018,548,586.50
  5. Step 5: Solve for x
    x = 2,018,548,586.50/68,805.76
  6. Step 6: Final answer
    x = 29,336.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.