Home / 81,624.21-122,362.49-29,021.39

Finding the Fourth Proportional to 81,624.21, 122,362.49 and 29,021.39

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Solution

The fourth proportional to 81,624.21, 122,362.49 and 29,021.39 is: 43,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,624.21 : 122,362.49 = 29,021.39 : x
  2. Step 2: Convert to fraction form
    81,624.21/122,362.49 = 29,021.39/x
  3. Step 3: Cross multiply
    81,624.21x = 122,362.49 × 29,021.39
  4. Step 4: Simplify right side
    81,624.21x = 3,551,129,463.26
  5. Step 5: Solve for x
    x = 3,551,129,463.26/81,624.21
  6. Step 6: Final answer
    x = 43,505.84

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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.