Home / 66,558.72-91,861.12-40,732.08

Finding the Fourth Proportional to 66,558.72, 91,861.12 and 40,732.08

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Solution

The fourth proportional to 66,558.72, 91,861.12 and 40,732.08 is: 56,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,558.72 : 91,861.12 = 40,732.08 : x
  2. Step 2: Convert to fraction form
    66,558.72/91,861.12 = 40,732.08/x
  3. Step 3: Cross multiply
    66,558.72x = 91,861.12 × 40,732.08
  4. Step 4: Simplify right side
    66,558.72x = 3,741,694,195.17
  5. Step 5: Solve for x
    x = 3,741,694,195.17/66,558.72
  6. Step 6: Final answer
    x = 56,216.44

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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.