Home / 57,971.82-86,996.70-20,531.76

Finding the Fourth Proportional to 57,971.82, 86,996.70 and 20,531.76

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Solution

The fourth proportional to 57,971.82, 86,996.70 and 20,531.76 is: 30,811.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,971.82 : 86,996.70 = 20,531.76 : x
  2. Step 2: Convert to fraction form
    57,971.82/86,996.70 = 20,531.76/x
  3. Step 3: Cross multiply
    57,971.82x = 86,996.70 × 20,531.76
  4. Step 4: Simplify right side
    57,971.82x = 1,786,195,365.19
  5. Step 5: Solve for x
    x = 1,786,195,365.19/57,971.82
  6. Step 6: Final answer
    x = 30,811.44

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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.