Home / 57,131.28-85,696-15,578.28

Finding the Fourth Proportional to 57,131.28, 85,696 and 15,578.28

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Solution

The fourth proportional to 57,131.28, 85,696 and 15,578.28 is: 23,367.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,131.28 : 85,696 = 15,578.28 : x
  2. Step 2: Convert to fraction form
    57,131.28/85,696 = 15,578.28/x
  3. Step 3: Cross multiply
    57,131.28x = 85,696 × 15,578.28
  4. Step 4: Simplify right side
    57,131.28x = 1,334,996,282.88
  5. Step 5: Solve for x
    x = 1,334,996,282.88/57,131.28
  6. Step 6: Final answer
    x = 23,367.17

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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.