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Finding the Fourth Proportional to 66,132, 91,268.28 and 36,329.76

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Solution

The fourth proportional to 66,132, 91,268.28 and 36,329.76 is: 50,138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,132 : 91,268.28 = 36,329.76 : x
  2. Step 2: Convert to fraction form
    66,132/91,268.28 = 36,329.76/x
  3. Step 3: Cross multiply
    66,132x = 91,268.28 × 36,329.76
  4. Step 4: Simplify right side
    66,132x = 3,315,754,708.01
  5. Step 5: Solve for x
    x = 3,315,754,708.01/66,132
  6. Step 6: Final answer
    x = 50,138.43

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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.