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Finding the Fourth Proportional to 66,945.30, 100,347.90 and 22,556.70

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Solution

The fourth proportional to 66,945.30, 100,347.90 and 22,556.70 is: 33,811.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,945.30 : 100,347.90 = 22,556.70 : x
  2. Step 2: Convert to fraction form
    66,945.30/100,347.90 = 22,556.70/x
  3. Step 3: Cross multiply
    66,945.30x = 100,347.90 × 22,556.70
  4. Step 4: Simplify right side
    66,945.30x = 2,263,517,475.93
  5. Step 5: Solve for x
    x = 2,263,517,475.93/66,945.30
  6. Step 6: Final answer
    x = 33,811.45

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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.