Home / 81,404.03-122,241.37-54,920.40

Finding the Fourth Proportional to 81,404.03, 122,241.37 and 54,920.40

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Solution

The fourth proportional to 81,404.03, 122,241.37 and 54,920.40 is: 82,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404.03 : 122,241.37 = 54,920.40 : x
  2. Step 2: Convert to fraction form
    81,404.03/122,241.37 = 54,920.40/x
  3. Step 3: Cross multiply
    81,404.03x = 122,241.37 × 54,920.40
  4. Step 4: Simplify right side
    81,404.03x = 6,713,544,799.65
  5. Step 5: Solve for x
    x = 6,713,544,799.65/81,404.03
  6. Step 6: Final answer
    x = 82,471.89

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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.