Home / 66,103.21-99,140.23-19,359.73

Finding the Fourth Proportional to 66,103.21, 99,140.23 and 19,359.73

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Solution

The fourth proportional to 66,103.21, 99,140.23 and 19,359.73 is: 29,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,103.21 : 99,140.23 = 19,359.73 : x
  2. Step 2: Convert to fraction form
    66,103.21/99,140.23 = 19,359.73/x
  3. Step 3: Cross multiply
    66,103.21x = 99,140.23 × 19,359.73
  4. Step 4: Simplify right side
    66,103.21x = 1,919,328,084.94
  5. Step 5: Solve for x
    x = 1,919,328,084.94/66,103.21
  6. Step 6: Final answer
    x = 29,035.32

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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.