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Finding the Fourth Proportional to 66,861.72, 100,276.02 and 29,431.14

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Solution

The fourth proportional to 66,861.72, 100,276.02 and 29,431.14 is: 44,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,861.72 : 100,276.02 = 29,431.14 : x
  2. Step 2: Convert to fraction form
    66,861.72/100,276.02 = 29,431.14/x
  3. Step 3: Cross multiply
    66,861.72x = 100,276.02 × 29,431.14
  4. Step 4: Simplify right side
    66,861.72x = 2,951,237,583.26
  5. Step 5: Solve for x
    x = 2,951,237,583.26/66,861.72
  6. Step 6: Final answer
    x = 44,139.42

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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.