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Finding the Fourth Proportional to 68,703.20, 103,054.80 and 33,711.20

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Solution

The fourth proportional to 68,703.20, 103,054.80 and 33,711.20 is: 50,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,703.20 : 103,054.80 = 33,711.20 : x
  2. Step 2: Convert to fraction form
    68,703.20/103,054.80 = 33,711.20/x
  3. Step 3: Cross multiply
    68,703.20x = 103,054.80 × 33,711.20
  4. Step 4: Simplify right side
    68,703.20x = 3,474,100,973.76
  5. Step 5: Solve for x
    x = 3,474,100,973.76/68,703.20
  6. Step 6: Final answer
    x = 50,566.80

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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.