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Finding the Fourth Proportional to 66,086.41, 91,200.86 and 35,871.65

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Solution

The fourth proportional to 66,086.41, 91,200.86 and 35,871.65 is: 49,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.41 : 91,200.86 = 35,871.65 : x
  2. Step 2: Convert to fraction form
    66,086.41/91,200.86 = 35,871.65/x
  3. Step 3: Cross multiply
    66,086.41x = 91,200.86 × 35,871.65
  4. Step 4: Simplify right side
    66,086.41x = 3,271,525,885.56
  5. Step 5: Solve for x
    x = 3,271,525,885.56/66,086.41
  6. Step 6: Final answer
    x = 49,503.76

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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.