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Finding the Fourth Proportional to 68,677.48, 103,068.96 and 30,738.52

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Solution

The fourth proportional to 68,677.48, 103,068.96 and 30,738.52 is: 46,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,677.48 : 103,068.96 = 30,738.52 : x
  2. Step 2: Convert to fraction form
    68,677.48/103,068.96 = 30,738.52/x
  3. Step 3: Cross multiply
    68,677.48x = 103,068.96 × 30,738.52
  4. Step 4: Simplify right side
    68,677.48x = 3,168,187,288.34
  5. Step 5: Solve for x
    x = 3,168,187,288.34/68,677.48
  6. Step 6: Final answer
    x = 46,131.39

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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.