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Finding the Fourth Proportional to 53,690.99, 80,504.57 and 20,413.49

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Solution

The fourth proportional to 53,690.99, 80,504.57 and 20,413.49 is: 30,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,690.99 : 80,504.57 = 20,413.49 : x
  2. Step 2: Convert to fraction form
    53,690.99/80,504.57 = 20,413.49/x
  3. Step 3: Cross multiply
    53,690.99x = 80,504.57 × 20,413.49
  4. Step 4: Simplify right side
    53,690.99x = 1,643,378,883.16
  5. Step 5: Solve for x
    x = 1,643,378,883.16/53,690.99
  6. Step 6: Final answer
    x = 30,608.10

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1.5x scale

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.