Home / 30,979.26-46,702.31-28,974.78

Finding the Fourth Proportional to 30,979.26, 46,702.31 and 28,974.78

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Solution

The fourth proportional to 30,979.26, 46,702.31 and 28,974.78 is: 43,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.26 : 46,702.31 = 28,974.78 : x
  2. Step 2: Convert to fraction form
    30,979.26/46,702.31 = 28,974.78/x
  3. Step 3: Cross multiply
    30,979.26x = 46,702.31 × 28,974.78
  4. Step 4: Simplify right side
    30,979.26x = 1,353,189,012.87
  5. Step 5: Solve for x
    x = 1,353,189,012.87/30,979.26
  6. Step 6: Final answer
    x = 43,680.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.