Home / 81,807.42-122,633.37-52,141.98

Finding the Fourth Proportional to 81,807.42, 122,633.37 and 52,141.98

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Solution

The fourth proportional to 81,807.42, 122,633.37 and 52,141.98 is: 78,163.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,807.42 : 122,633.37 = 52,141.98 : x
  2. Step 2: Convert to fraction form
    81,807.42/122,633.37 = 52,141.98/x
  3. Step 3: Cross multiply
    81,807.42x = 122,633.37 × 52,141.98
  4. Step 4: Simplify right side
    81,807.42x = 6,394,346,725.87
  5. Step 5: Solve for x
    x = 6,394,346,725.87/81,807.42
  6. Step 6: Final answer
    x = 78,163.41

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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.