Home / 81,550.94-122,357.52-31,666.03

Finding the Fourth Proportional to 81,550.94, 122,357.52 and 31,666.03

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Solution

The fourth proportional to 81,550.94, 122,357.52 and 31,666.03 is: 47,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,550.94 : 122,357.52 = 31,666.03 : x
  2. Step 2: Convert to fraction form
    81,550.94/122,357.52 = 31,666.03/x
  3. Step 3: Cross multiply
    81,550.94x = 122,357.52 × 31,666.03
  4. Step 4: Simplify right side
    81,550.94x = 3,874,576,593.15
  5. Step 5: Solve for x
    x = 3,874,576,593.15/81,550.94
  6. Step 6: Final answer
    x = 47,511.12

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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.