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Finding the Fourth Proportional to 45,504.60, 68,240.70 and 20,556.60

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Solution

The fourth proportional to 45,504.60, 68,240.70 and 20,556.60 is: 30,827.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,504.60 : 68,240.70 = 20,556.60 : x
  2. Step 2: Convert to fraction form
    45,504.60/68,240.70 = 20,556.60/x
  3. Step 3: Cross multiply
    45,504.60x = 68,240.70 × 20,556.60
  4. Step 4: Simplify right side
    45,504.60x = 1,402,796,773.62
  5. Step 5: Solve for x
    x = 1,402,796,773.62/45,504.60
  6. Step 6: Final answer
    x = 30,827.58

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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.