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Finding the Fourth Proportional to 55,276.80, 82,738.80 and 43,612.80

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Solution

The fourth proportional to 55,276.80, 82,738.80 and 43,612.80 is: 65,280.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,276.80 : 82,738.80 = 43,612.80 : x
  2. Step 2: Convert to fraction form
    55,276.80/82,738.80 = 43,612.80/x
  3. Step 3: Cross multiply
    55,276.80x = 82,738.80 × 43,612.80
  4. Step 4: Simplify right side
    55,276.80x = 3,608,470,736.64
  5. Step 5: Solve for x
    x = 3,608,470,736.64/55,276.80
  6. Step 6: Final answer
    x = 65,280.02

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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.