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Finding the Fourth Proportional to 53,720.70, 80,592.69 and 20,441.40

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Solution

The fourth proportional to 53,720.70, 80,592.69 and 20,441.40 is: 30,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,720.70 : 80,592.69 = 20,441.40 : x
  2. Step 2: Convert to fraction form
    53,720.70/80,592.69 = 20,441.40/x
  3. Step 3: Cross multiply
    53,720.70x = 80,592.69 × 20,441.40
  4. Step 4: Simplify right side
    53,720.70x = 1,647,427,413.37
  5. Step 5: Solve for x
    x = 1,647,427,413.37/53,720.70
  6. Step 6: Final answer
    x = 30,666.53

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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.