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Finding the Fourth Proportional to 68,986.80, 103,458.30 and 29,533.32

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Solution

The fourth proportional to 68,986.80, 103,458.30 and 29,533.32 is: 44,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,986.80 : 103,458.30 = 29,533.32 : x
  2. Step 2: Convert to fraction form
    68,986.80/103,458.30 = 29,533.32/x
  3. Step 3: Cross multiply
    68,986.80x = 103,458.30 × 29,533.32
  4. Step 4: Simplify right side
    68,986.80x = 3,055,467,080.56
  5. Step 5: Solve for x
    x = 3,055,467,080.56/68,986.80
  6. Step 6: Final answer
    x = 44,290.60

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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.