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Finding the Fourth Proportional to 68,800.05, 103,297.28 and 42,556.05

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Solution

The fourth proportional to 68,800.05, 103,297.28 and 42,556.05 is: 63,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,800.05 : 103,297.28 = 42,556.05 : x
  2. Step 2: Convert to fraction form
    68,800.05/103,297.28 = 42,556.05/x
  3. Step 3: Cross multiply
    68,800.05x = 103,297.28 × 42,556.05
  4. Step 4: Simplify right side
    68,800.05x = 4,395,923,999.76
  5. Step 5: Solve for x
    x = 4,395,923,999.76/68,800.05
  6. Step 6: Final answer
    x = 63,894.20

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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.