Home / 66,961.22-100,287.90-38,811.65

Finding the Fourth Proportional to 66,961.22, 100,287.90 and 38,811.65

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Solution

The fourth proportional to 66,961.22, 100,287.90 and 38,811.65 is: 58,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,961.22 : 100,287.90 = 38,811.65 : x
  2. Step 2: Convert to fraction form
    66,961.22/100,287.90 = 38,811.65/x
  3. Step 3: Cross multiply
    66,961.22x = 100,287.90 × 38,811.65
  4. Step 4: Simplify right side
    66,961.22x = 3,892,338,372.60
  5. Step 5: Solve for x
    x = 3,892,338,372.60/66,961.22
  6. Step 6: Final answer
    x = 58,128.25

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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.