Home / 82,097.84-123,112.88-28,778.64

Finding the Fourth Proportional to 82,097.84, 123,112.88 and 28,778.64

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Solution

The fourth proportional to 82,097.84, 123,112.88 and 28,778.64 is: 43,156.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,097.84 : 123,112.88 = 28,778.64 : x
  2. Step 2: Convert to fraction form
    82,097.84/123,112.88 = 28,778.64/x
  3. Step 3: Cross multiply
    82,097.84x = 123,112.88 × 28,778.64
  4. Step 4: Simplify right side
    82,097.84x = 3,543,021,252.88
  5. Step 5: Solve for x
    x = 3,543,021,252.88/82,097.84
  6. Step 6: Final answer
    x = 43,156.08

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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.