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Finding the Fourth Proportional to 55,940.40, 83,912.40 and 20,883.60

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Solution

The fourth proportional to 55,940.40, 83,912.40 and 20,883.60 is: 31,326.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,940.40 : 83,912.40 = 20,883.60 : x
  2. Step 2: Convert to fraction form
    55,940.40/83,912.40 = 20,883.60/x
  3. Step 3: Cross multiply
    55,940.40x = 83,912.40 × 20,883.60
  4. Step 4: Simplify right side
    55,940.40x = 1,752,392,996.64
  5. Step 5: Solve for x
    x = 1,752,392,996.64/55,940.40
  6. Step 6: Final answer
    x = 31,326.07

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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.