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Finding the Fourth Proportional to 45,449.22, 68,068 and 43,872.74

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Solution

The fourth proportional to 45,449.22, 68,068 and 43,872.74 is: 65,706.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,449.22 : 68,068 = 43,872.74 : x
  2. Step 2: Convert to fraction form
    45,449.22/68,068 = 43,872.74/x
  3. Step 3: Cross multiply
    45,449.22x = 68,068 × 43,872.74
  4. Step 4: Simplify right side
    45,449.22x = 2,986,329,666.32
  5. Step 5: Solve for x
    x = 2,986,329,666.32/45,449.22
  6. Step 6: Final answer
    x = 65,706.95

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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.