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Finding the Fourth Proportional to 66,883.93, 100,317.69 and 38,819.25

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Solution

The fourth proportional to 66,883.93, 100,317.69 and 38,819.25 is: 58,224.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,883.93 : 100,317.69 = 38,819.25 : x
  2. Step 2: Convert to fraction form
    66,883.93/100,317.69 = 38,819.25/x
  3. Step 3: Cross multiply
    66,883.93x = 100,317.69 × 38,819.25
  4. Step 4: Simplify right side
    66,883.93x = 3,894,257,487.53
  5. Step 5: Solve for x
    x = 3,894,257,487.53/66,883.93
  6. Step 6: Final answer
    x = 58,224.12

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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.