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Finding the Fourth Proportional to 68,220.60, 102,341.83 and 28,783.52

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Solution

The fourth proportional to 68,220.60, 102,341.83 and 28,783.52 is: 43,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220.60 : 102,341.83 = 28,783.52 : x
  2. Step 2: Convert to fraction form
    68,220.60/102,341.83 = 28,783.52/x
  3. Step 3: Cross multiply
    68,220.60x = 102,341.83 × 28,783.52
  4. Step 4: Simplify right side
    68,220.60x = 2,945,757,964.72
  5. Step 5: Solve for x
    x = 2,945,757,964.72/68,220.60
  6. Step 6: Final answer
    x = 43,179.89

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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.