Home / 81,801.05-122,687.28-21,830.27

Finding the Fourth Proportional to 81,801.05, 122,687.28 and 21,830.27

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Solution

The fourth proportional to 81,801.05, 122,687.28 and 21,830.27 is: 32,741.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,801.05 : 122,687.28 = 21,830.27 : x
  2. Step 2: Convert to fraction form
    81,801.05/122,687.28 = 21,830.27/x
  3. Step 3: Cross multiply
    81,801.05x = 122,687.28 × 21,830.27
  4. Step 4: Simplify right side
    81,801.05x = 2,678,295,834.53
  5. Step 5: Solve for x
    x = 2,678,295,834.53/81,801.05
  6. Step 6: Final answer
    x = 32,741.58

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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.