Home / 68,548.69-102,784.83-21,150.32

Finding the Fourth Proportional to 68,548.69, 102,784.83 and 21,150.32

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Solution

The fourth proportional to 68,548.69, 102,784.83 and 21,150.32 is: 31,713.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,548.69 : 102,784.83 = 21,150.32 : x
  2. Step 2: Convert to fraction form
    68,548.69/102,784.83 = 21,150.32/x
  3. Step 3: Cross multiply
    68,548.69x = 102,784.83 × 21,150.32
  4. Step 4: Simplify right side
    68,548.69x = 2,173,932,045.65
  5. Step 5: Solve for x
    x = 2,173,932,045.65/68,548.69
  6. Step 6: Final answer
    x = 31,713.69

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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.