Home / 57,820.74-86,721.42-20,371.98

Finding the Fourth Proportional to 57,820.74, 86,721.42 and 20,371.98

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Solution

The fourth proportional to 57,820.74, 86,721.42 and 20,371.98 is: 30,554.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,820.74 : 86,721.42 = 20,371.98 : x
  2. Step 2: Convert to fraction form
    57,820.74/86,721.42 = 20,371.98/x
  3. Step 3: Cross multiply
    57,820.74x = 86,721.42 × 20,371.98
  4. Step 4: Simplify right side
    57,820.74x = 1,766,687,033.81
  5. Step 5: Solve for x
    x = 1,766,687,033.81/57,820.74
  6. Step 6: Final answer
    x = 30,554.56

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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.