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Finding the Fourth Proportional to 51,993.85, 71,751.51 and 28,120.52

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Solution

The fourth proportional to 51,993.85, 71,751.51 and 28,120.52 is: 38,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,993.85 : 71,751.51 = 28,120.52 : x
  2. Step 2: Convert to fraction form
    51,993.85/71,751.51 = 28,120.52/x
  3. Step 3: Cross multiply
    51,993.85x = 71,751.51 × 28,120.52
  4. Step 4: Simplify right side
    51,993.85x = 2,017,689,413.23
  5. Step 5: Solve for x
    x = 2,017,689,413.23/51,993.85
  6. Step 6: Final answer
    x = 38,806.31

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1.5x scale

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.