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Finding the Fourth Proportional to 57,865.07, 86,796.98 and 43,910.79

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Solution

The fourth proportional to 57,865.07, 86,796.98 and 43,910.79 is: 65,865.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,865.07 : 86,796.98 = 43,910.79 : x
  2. Step 2: Convert to fraction form
    57,865.07/86,796.98 = 43,910.79/x
  3. Step 3: Cross multiply
    57,865.07x = 86,796.98 × 43,910.79
  4. Step 4: Simplify right side
    57,865.07x = 3,811,323,961.41
  5. Step 5: Solve for x
    x = 3,811,323,961.41/57,865.07
  6. Step 6: Final answer
    x = 65,865.71

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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.