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Finding the Fourth Proportional to 66,910.57, 100,404.72 and 29,974.57

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Solution

The fourth proportional to 66,910.57, 100,404.72 and 29,974.57 is: 44,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.57 : 100,404.72 = 29,974.57 : x
  2. Step 2: Convert to fraction form
    66,910.57/100,404.72 = 29,974.57/x
  3. Step 3: Cross multiply
    66,910.57x = 100,404.72 × 29,974.57
  4. Step 4: Simplify right side
    66,910.57x = 3,009,588,307.97
  5. Step 5: Solve for x
    x = 3,009,588,307.97/66,910.57
  6. Step 6: Final answer
    x = 44,979.27

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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.