Home / 57,943.89-86,954.78-20,503.80

Finding the Fourth Proportional to 57,943.89, 86,954.78 and 20,503.80

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Solution

The fourth proportional to 57,943.89, 86,954.78 and 20,503.80 is: 30,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,943.89 : 86,954.78 = 20,503.80 : x
  2. Step 2: Convert to fraction form
    57,943.89/86,954.78 = 20,503.80/x
  3. Step 3: Cross multiply
    57,943.89x = 86,954.78 × 20,503.80
  4. Step 4: Simplify right side
    57,943.89x = 1,782,903,469.42
  5. Step 5: Solve for x
    x = 1,782,903,469.42/57,943.89
  6. Step 6: Final answer
    x = 30,769.48

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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.