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Finding the Fourth Proportional to 66,340, 91,549.84 and 36,532.64

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Solution

The fourth proportional to 66,340, 91,549.84 and 36,532.64 is: 50,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,340 : 91,549.84 = 36,532.64 : x
  2. Step 2: Convert to fraction form
    66,340/91,549.84 = 36,532.64/x
  3. Step 3: Cross multiply
    66,340x = 91,549.84 × 36,532.64
  4. Step 4: Simplify right side
    66,340x = 3,344,557,346.78
  5. Step 5: Solve for x
    x = 3,344,557,346.78/66,340
  6. Step 6: Final answer
    x = 50,415.40

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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.