Home / 84,112.26-126,155.47-30,791.67

Finding the Fourth Proportional to 84,112.26, 126,155.47 and 30,791.67

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Solution

The fourth proportional to 84,112.26, 126,155.47 and 30,791.67 is: 46,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,112.26 : 126,155.47 = 30,791.67 : x
  2. Step 2: Convert to fraction form
    84,112.26/126,155.47 = 30,791.67/x
  3. Step 3: Cross multiply
    84,112.26x = 126,155.47 × 30,791.67
  4. Step 4: Simplify right side
    84,112.26x = 3,884,537,600.93
  5. Step 5: Solve for x
    x = 3,884,537,600.93/84,112.26
  6. Step 6: Final answer
    x = 46,182.78

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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.