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Finding the Fourth Proportional to 56,261.60, 84,396.72 and 16,815.68

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Solution

The fourth proportional to 56,261.60, 84,396.72 and 16,815.68 is: 25,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,261.60 : 84,396.72 = 16,815.68 : x
  2. Step 2: Convert to fraction form
    56,261.60/84,396.72 = 16,815.68/x
  3. Step 3: Cross multiply
    56,261.60x = 84,396.72 × 16,815.68
  4. Step 4: Simplify right side
    56,261.60x = 1,419,188,236.57
  5. Step 5: Solve for x
    x = 1,419,188,236.57/56,261.60
  6. Step 6: Final answer
    x = 25,224.81

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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.