Home / 66,611.27-99,932.57-19,865.09

Finding the Fourth Proportional to 66,611.27, 99,932.57 and 19,865.09

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Solution

The fourth proportional to 66,611.27, 99,932.57 and 19,865.09 is: 29,802.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,611.27 : 99,932.57 = 19,865.09 : x
  2. Step 2: Convert to fraction form
    66,611.27/99,932.57 = 19,865.09/x
  3. Step 3: Cross multiply
    66,611.27x = 99,932.57 × 19,865.09
  4. Step 4: Simplify right side
    66,611.27x = 1,985,169,496.98
  5. Step 5: Solve for x
    x = 1,985,169,496.98/66,611.27
  6. Step 6: Final answer
    x = 29,802.31

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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.