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Finding the Fourth Proportional to 66,573.77, 99,855.18 and 19,826.64

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Solution

The fourth proportional to 66,573.77, 99,855.18 and 19,826.64 is: 29,738.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,573.77 : 99,855.18 = 19,826.64 : x
  2. Step 2: Convert to fraction form
    66,573.77/99,855.18 = 19,826.64/x
  3. Step 3: Cross multiply
    66,573.77x = 99,855.18 × 19,826.64
  4. Step 4: Simplify right side
    66,573.77x = 1,979,792,706.00
  5. Step 5: Solve for x
    x = 1,979,792,706.00/66,573.77
  6. Step 6: Final answer
    x = 29,738.33

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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.