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Finding the Fourth Proportional to 66,065.76, 91,170.28 and 35,850.30

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Solution

The fourth proportional to 66,065.76, 91,170.28 and 35,850.30 is: 49,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.76 : 91,170.28 = 35,850.30 : x
  2. Step 2: Convert to fraction form
    66,065.76/91,170.28 = 35,850.30/x
  3. Step 3: Cross multiply
    66,065.76x = 91,170.28 × 35,850.30
  4. Step 4: Simplify right side
    66,065.76x = 3,268,481,799.46
  5. Step 5: Solve for x
    x = 3,268,481,799.46/66,065.76
  6. Step 6: Final answer
    x = 49,473.16

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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.