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Finding the Fourth Proportional to 66,471.78, 91,732.16 and 36,257.10

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Solution

The fourth proportional to 66,471.78, 91,732.16 and 36,257.10 is: 50,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,471.78 : 91,732.16 = 36,257.10 : x
  2. Step 2: Convert to fraction form
    66,471.78/91,732.16 = 36,257.10/x
  3. Step 3: Cross multiply
    66,471.78x = 91,732.16 × 36,257.10
  4. Step 4: Simplify right side
    66,471.78x = 3,325,941,917.05
  5. Step 5: Solve for x
    x = 3,325,941,917.05/66,471.78
  6. Step 6: Final answer
    x = 50,035.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.