Home / 30,379.68-45,571.14-28,717.56

Finding the Fourth Proportional to 30,379.68, 45,571.14 and 28,717.56

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Solution

The fourth proportional to 30,379.68, 45,571.14 and 28,717.56 is: 43,077.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.68 : 45,571.14 = 28,717.56 : x
  2. Step 2: Convert to fraction form
    30,379.68/45,571.14 = 28,717.56/x
  3. Step 3: Cross multiply
    30,379.68x = 45,571.14 × 28,717.56
  4. Step 4: Simplify right side
    30,379.68x = 1,308,691,947.22
  5. Step 5: Solve for x
    x = 1,308,691,947.22/30,379.68
  6. Step 6: Final answer
    x = 43,077.87

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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.