Home / 68,418.35-102,612.87-39,936.32

Finding the Fourth Proportional to 68,418.35, 102,612.87 and 39,936.32

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Solution

The fourth proportional to 68,418.35, 102,612.87 and 39,936.32 is: 59,895.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,418.35 : 102,612.87 = 39,936.32 : x
  2. Step 2: Convert to fraction form
    68,418.35/102,612.87 = 39,936.32/x
  3. Step 3: Cross multiply
    68,418.35x = 102,612.87 × 39,936.32
  4. Step 4: Simplify right side
    68,418.35x = 4,097,980,412.44
  5. Step 5: Solve for x
    x = 4,097,980,412.44/68,418.35
  6. Step 6: Final answer
    x = 59,895.93

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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.