Home / 55,982.26-83,975.82-20,902.78

Finding the Fourth Proportional to 55,982.26, 83,975.82 and 20,902.78

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Solution

The fourth proportional to 55,982.26, 83,975.82 and 20,902.78 is: 31,355.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,982.26 : 83,975.82 = 20,902.78 : x
  2. Step 2: Convert to fraction form
    55,982.26/83,975.82 = 20,902.78/x
  3. Step 3: Cross multiply
    55,982.26x = 83,975.82 × 20,902.78
  4. Step 4: Simplify right side
    55,982.26x = 1,755,328,090.78
  5. Step 5: Solve for x
    x = 1,755,328,090.78/55,982.26
  6. Step 6: Final answer
    x = 31,355.08

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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.