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Finding the Fourth Proportional to 57,588.96, 86,236.56 and 45,919.20

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Solution

The fourth proportional to 57,588.96, 86,236.56 and 45,919.20 is: 68,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,588.96 : 86,236.56 = 45,919.20 : x
  2. Step 2: Convert to fraction form
    57,588.96/86,236.56 = 45,919.20/x
  3. Step 3: Cross multiply
    57,588.96x = 86,236.56 × 45,919.20
  4. Step 4: Simplify right side
    57,588.96x = 3,959,913,845.95
  5. Step 5: Solve for x
    x = 3,959,913,845.95/57,588.96
  6. Step 6: Final answer
    x = 68,761.68

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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.