Home / 57,121.10-78,829.57-31,627.46

Finding the Fourth Proportional to 57,121.10, 78,829.57 and 31,627.46

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Solution

The fourth proportional to 57,121.10, 78,829.57 and 31,627.46 is: 43,647.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.10 : 78,829.57 = 31,627.46 : x
  2. Step 2: Convert to fraction form
    57,121.10/78,829.57 = 31,627.46/x
  3. Step 3: Cross multiply
    57,121.10x = 78,829.57 × 31,627.46
  4. Step 4: Simplify right side
    57,121.10x = 2,493,179,308.60
  5. Step 5: Solve for x
    x = 2,493,179,308.60/57,121.10
  6. Step 6: Final answer
    x = 43,647.26

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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.