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Finding the Fourth Proportional to 66,118.68, 91,243.26 and 35,903.43

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Solution

The fourth proportional to 66,118.68, 91,243.26 and 35,903.43 is: 49,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,118.68 : 91,243.26 = 35,903.43 : x
  2. Step 2: Convert to fraction form
    66,118.68/91,243.26 = 35,903.43/x
  3. Step 3: Cross multiply
    66,118.68x = 91,243.26 × 35,903.43
  4. Step 4: Simplify right side
    66,118.68x = 3,275,945,998.38
  5. Step 5: Solve for x
    x = 3,275,945,998.38/66,118.68
  6. Step 6: Final answer
    x = 49,546.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.