Home / 81,865.14-122,666.58-73,991.94

Finding the Fourth Proportional to 81,865.14, 122,666.58 and 73,991.94

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Solution

The fourth proportional to 81,865.14, 122,666.58 and 73,991.94 is: 110,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,865.14 : 122,666.58 = 73,991.94 : x
  2. Step 2: Convert to fraction form
    81,865.14/122,666.58 = 73,991.94/x
  3. Step 3: Cross multiply
    81,865.14x = 122,666.58 × 73,991.94
  4. Step 4: Simplify right side
    81,865.14x = 9,076,338,227.37
  5. Step 5: Solve for x
    x = 9,076,338,227.37/81,865.14
  6. Step 6: Final answer
    x = 110,869.39

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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.