Home / 68,738.10-103,103.34-18,814.64

Finding the Fourth Proportional to 68,738.10, 103,103.34 and 18,814.64

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Solution

The fourth proportional to 68,738.10, 103,103.34 and 18,814.64 is: 28,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,738.10 : 103,103.34 = 18,814.64 : x
  2. Step 2: Convert to fraction form
    68,738.10/103,103.34 = 18,814.64/x
  3. Step 3: Cross multiply
    68,738.10x = 103,103.34 × 18,814.64
  4. Step 4: Simplify right side
    68,738.10x = 1,939,851,709.38
  5. Step 5: Solve for x
    x = 1,939,851,709.38/68,738.10
  6. Step 6: Final answer
    x = 28,220.91

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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.