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Finding the Fourth Proportional to 66,101.21, 99,137.23 and 19,357.73

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Solution

The fourth proportional to 66,101.21, 99,137.23 and 19,357.73 is: 29,032.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,101.21 : 99,137.23 = 19,357.73 : x
  2. Step 2: Convert to fraction form
    66,101.21/99,137.23 = 19,357.73/x
  3. Step 3: Cross multiply
    66,101.21x = 99,137.23 × 19,357.73
  4. Step 4: Simplify right side
    66,101.21x = 1,919,071,731.29
  5. Step 5: Solve for x
    x = 1,919,071,731.29/66,101.21
  6. Step 6: Final answer
    x = 29,032.32

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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.