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Finding the Fourth Proportional to 86,155.83, 118,905.52 and 52,163.47

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Solution

The fourth proportional to 86,155.83, 118,905.52 and 52,163.47 is: 71,991.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,155.83 : 118,905.52 = 52,163.47 : x
  2. Step 2: Convert to fraction form
    86,155.83/118,905.52 = 52,163.47/x
  3. Step 3: Cross multiply
    86,155.83x = 118,905.52 × 52,163.47
  4. Step 4: Simplify right side
    86,155.83x = 6,202,524,306.96
  5. Step 5: Solve for x
    x = 6,202,524,306.96/86,155.83
  6. Step 6: Final answer
    x = 71,991.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.