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Finding the Fourth Proportional to 66,651.84, 91,977.12 and 44,280

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Solution

The fourth proportional to 66,651.84, 91,977.12 and 44,280 is: 61,104.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,651.84 : 91,977.12 = 44,280 : x
  2. Step 2: Convert to fraction form
    66,651.84/91,977.12 = 44,280/x
  3. Step 3: Cross multiply
    66,651.84x = 91,977.12 × 44,280
  4. Step 4: Simplify right side
    66,651.84x = 4,072,746,873.60
  5. Step 5: Solve for x
    x = 4,072,746,873.60/66,651.84
  6. Step 6: Final answer
    x = 61,104.79

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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.