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Finding the Fourth Proportional to 68,675.48, 103,065.96 and 30,736.52

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Solution

The fourth proportional to 68,675.48, 103,065.96 and 30,736.52 is: 46,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,675.48 : 103,065.96 = 30,736.52 : x
  2. Step 2: Convert to fraction form
    68,675.48/103,065.96 = 30,736.52/x
  3. Step 3: Cross multiply
    68,675.48x = 103,065.96 × 30,736.52
  4. Step 4: Simplify right side
    68,675.48x = 3,167,888,940.86
  5. Step 5: Solve for x
    x = 3,167,888,940.86/68,675.48
  6. Step 6: Final answer
    x = 46,128.38

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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.