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Finding the Fourth Proportional to 100,717.58, 150,940.30 and 38,354.06

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Solution

The fourth proportional to 100,717.58, 150,940.30 and 38,354.06 is: 57,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,717.58 : 150,940.30 = 38,354.06 : x
  2. Step 2: Convert to fraction form
    100,717.58/150,940.30 = 38,354.06/x
  3. Step 3: Cross multiply
    100,717.58x = 150,940.30 × 38,354.06
  4. Step 4: Simplify right side
    100,717.58x = 5,789,173,322.62
  5. Step 5: Solve for x
    x = 5,789,173,322.62/100,717.58
  6. Step 6: Final answer
    x = 57,479.27

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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.