Home / 57,022.47-78,688.53-31,180.54

Finding the Fourth Proportional to 57,022.47, 78,688.53 and 31,180.54

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Solution

The fourth proportional to 57,022.47, 78,688.53 and 31,180.54 is: 43,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,022.47 : 78,688.53 = 31,180.54 : x
  2. Step 2: Convert to fraction form
    57,022.47/78,688.53 = 31,180.54/x
  3. Step 3: Cross multiply
    57,022.47x = 78,688.53 × 31,180.54
  4. Step 4: Simplify right side
    57,022.47x = 2,453,550,857.21
  5. Step 5: Solve for x
    x = 2,453,550,857.21/57,022.47
  6. Step 6: Final answer
    x = 43,027.79

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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.