Home / 68,731.58-103,102.15-28,735.45

Finding the Fourth Proportional to 68,731.58, 103,102.15 and 28,735.45

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Solution

The fourth proportional to 68,731.58, 103,102.15 and 28,735.45 is: 43,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,731.58 : 103,102.15 = 28,735.45 : x
  2. Step 2: Convert to fraction form
    68,731.58/103,102.15 = 28,735.45/x
  3. Step 3: Cross multiply
    68,731.58x = 103,102.15 × 28,735.45
  4. Step 4: Simplify right side
    68,731.58x = 2,962,686,676.22
  5. Step 5: Solve for x
    x = 2,962,686,676.22/68,731.58
  6. Step 6: Final answer
    x = 43,105.17

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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.