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Finding the Fourth Proportional to 53,424.20, 80,039.10 and 43,509.80

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Solution

The fourth proportional to 53,424.20, 80,039.10 and 43,509.80 is: 65,185.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,424.20 : 80,039.10 = 43,509.80 : x
  2. Step 2: Convert to fraction form
    53,424.20/80,039.10 = 43,509.80/x
  3. Step 3: Cross multiply
    53,424.20x = 80,039.10 × 43,509.80
  4. Step 4: Simplify right side
    53,424.20x = 3,482,485,233.18
  5. Step 5: Solve for x
    x = 3,482,485,233.18/53,424.20
  6. Step 6: Final answer
    x = 65,185.54

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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.