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Finding the Fourth Proportional to 66,987.90, 100,474.92 and 33,694.38

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Solution

The fourth proportional to 66,987.90, 100,474.92 and 33,694.38 is: 50,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,987.90 : 100,474.92 = 33,694.38 : x
  2. Step 2: Convert to fraction form
    66,987.90/100,474.92 = 33,694.38/x
  3. Step 3: Cross multiply
    66,987.90x = 100,474.92 × 33,694.38
  4. Step 4: Simplify right side
    66,987.90x = 3,385,440,134.95
  5. Step 5: Solve for x
    x = 3,385,440,134.95/66,987.90
  6. Step 6: Final answer
    x = 50,538.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.