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Finding the Fourth Proportional to 68,409.80, 102,625.50 and 28,967.16

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Solution

The fourth proportional to 68,409.80, 102,625.50 and 28,967.16 is: 43,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,409.80 : 102,625.50 = 28,967.16 : x
  2. Step 2: Convert to fraction form
    68,409.80/102,625.50 = 28,967.16/x
  3. Step 3: Cross multiply
    68,409.80x = 102,625.50 × 28,967.16
  4. Step 4: Simplify right side
    68,409.80x = 2,972,769,278.58
  5. Step 5: Solve for x
    x = 2,972,769,278.58/68,409.80
  6. Step 6: Final answer
    x = 43,455.31

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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.