Home / 66,638.63-99,943.20-19,243.44

Finding the Fourth Proportional to 66,638.63, 99,943.20 and 19,243.44

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Solution

The fourth proportional to 66,638.63, 99,943.20 and 19,243.44 is: 28,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.63 : 99,943.20 = 19,243.44 : x
  2. Step 2: Convert to fraction form
    66,638.63/99,943.20 = 19,243.44/x
  3. Step 3: Cross multiply
    66,638.63x = 99,943.20 × 19,243.44
  4. Step 4: Simplify right side
    66,638.63x = 1,923,250,972.61
  5. Step 5: Solve for x
    x = 1,923,250,972.61/66,638.63
  6. Step 6: Final answer
    x = 28,860.90

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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.