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Finding the Fourth Proportional to 66,906.74, 100,364.73 and 19,521.08

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Solution

The fourth proportional to 66,906.74, 100,364.73 and 19,521.08 is: 29,282.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,906.74 : 100,364.73 = 19,521.08 : x
  2. Step 2: Convert to fraction form
    66,906.74/100,364.73 = 19,521.08/x
  3. Step 3: Cross multiply
    66,906.74x = 100,364.73 × 19,521.08
  4. Step 4: Simplify right side
    66,906.74x = 1,959,227,724.85
  5. Step 5: Solve for x
    x = 1,959,227,724.85/66,906.74
  6. Step 6: Final answer
    x = 29,282.96

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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.