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Finding the Fourth Proportional to 57,881.93, 86,763.69 and 39,163.95

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Solution

The fourth proportional to 57,881.93, 86,763.69 and 39,163.95 is: 58,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,881.93 : 86,763.69 = 39,163.95 : x
  2. Step 2: Convert to fraction form
    57,881.93/86,763.69 = 39,163.95/x
  3. Step 3: Cross multiply
    57,881.93x = 86,763.69 × 39,163.95
  4. Step 4: Simplify right side
    57,881.93x = 3,398,008,816.98
  5. Step 5: Solve for x
    x = 3,398,008,816.98/57,881.93
  6. Step 6: Final answer
    x = 58,705.87

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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.