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Finding the Fourth Proportional to 66,945.80, 100,418.88 and 27,475.22

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Solution

The fourth proportional to 66,945.80, 100,418.88 and 27,475.22 is: 41,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,945.80 : 100,418.88 = 27,475.22 : x
  2. Step 2: Convert to fraction form
    66,945.80/100,418.88 = 27,475.22/x
  3. Step 3: Cross multiply
    66,945.80x = 100,418.88 × 27,475.22
  4. Step 4: Simplify right side
    66,945.80x = 2,759,030,820.15
  5. Step 5: Solve for x
    x = 2,759,030,820.15/66,945.80
  6. Step 6: Final answer
    x = 41,212.90

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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.