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Finding the Fourth Proportional to 66,015.68, 91,102.10 and 35,801.16

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Solution

The fourth proportional to 66,015.68, 91,102.10 and 35,801.16 is: 49,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,015.68 : 91,102.10 = 35,801.16 : x
  2. Step 2: Convert to fraction form
    66,015.68/91,102.10 = 35,801.16/x
  3. Step 3: Cross multiply
    66,015.68x = 91,102.10 × 35,801.16
  4. Step 4: Simplify right side
    66,015.68x = 3,261,560,858.44
  5. Step 5: Solve for x
    x = 3,261,560,858.44/66,015.68
  6. Step 6: Final answer
    x = 49,405.85

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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.