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Finding the Fourth Proportional to 68,493.56, 102,699.34 and 28,464.28

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Solution

The fourth proportional to 68,493.56, 102,699.34 and 28,464.28 is: 42,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,493.56 : 102,699.34 = 28,464.28 : x
  2. Step 2: Convert to fraction form
    68,493.56/102,699.34 = 28,464.28/x
  3. Step 3: Cross multiply
    68,493.56x = 102,699.34 × 28,464.28
  4. Step 4: Simplify right side
    68,493.56x = 2,923,262,769.58
  5. Step 5: Solve for x
    x = 2,923,262,769.58/68,493.56
  6. Step 6: Final answer
    x = 42,679.38

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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.