Home / 57,019.52-78,687.24-31,868.48

Finding the Fourth Proportional to 57,019.52, 78,687.24 and 31,868.48

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Solution

The fourth proportional to 57,019.52, 78,687.24 and 31,868.48 is: 43,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,019.52 : 78,687.24 = 31,868.48 : x
  2. Step 2: Convert to fraction form
    57,019.52/78,687.24 = 31,868.48/x
  3. Step 3: Cross multiply
    57,019.52x = 78,687.24 × 31,868.48
  4. Step 4: Simplify right side
    57,019.52x = 2,507,642,734.20
  5. Step 5: Solve for x
    x = 2,507,642,734.20/57,019.52
  6. Step 6: Final answer
    x = 43,978.67

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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.