Home / 57,224.78-78,969.36-31,731.18

Finding the Fourth Proportional to 57,224.78, 78,969.36 and 31,731.18

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Solution

The fourth proportional to 57,224.78, 78,969.36 and 31,731.18 is: 43,788.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,224.78 : 78,969.36 = 31,731.18 : x
  2. Step 2: Convert to fraction form
    57,224.78/78,969.36 = 31,731.18/x
  3. Step 3: Cross multiply
    57,224.78x = 78,969.36 × 31,731.18
  4. Step 4: Simplify right side
    57,224.78x = 2,505,790,817.99
  5. Step 5: Solve for x
    x = 2,505,790,817.99/57,224.78
  6. Step 6: Final answer
    x = 43,788.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.