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Finding the Fourth Proportional to 53,961.60, 81,015.30 and 34,278.60

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Solution

The fourth proportional to 53,961.60, 81,015.30 and 34,278.60 is: 51,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,961.60 : 81,015.30 = 34,278.60 : x
  2. Step 2: Convert to fraction form
    53,961.60/81,015.30 = 34,278.60/x
  3. Step 3: Cross multiply
    53,961.60x = 81,015.30 × 34,278.60
  4. Step 4: Simplify right side
    53,961.60x = 2,777,091,062.58
  5. Step 5: Solve for x
    x = 2,777,091,062.58/53,961.60
  6. Step 6: Final answer
    x = 51,464.21

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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.