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Finding the Fourth Proportional to 68,954.80, 103,430.14 and 19,037.94

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Solution

The fourth proportional to 68,954.80, 103,430.14 and 19,037.94 is: 28,556.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,954.80 : 103,430.14 = 19,037.94 : x
  2. Step 2: Convert to fraction form
    68,954.80/103,430.14 = 19,037.94/x
  3. Step 3: Cross multiply
    68,954.80x = 103,430.14 × 19,037.94
  4. Step 4: Simplify right side
    68,954.80x = 1,969,097,081.88
  5. Step 5: Solve for x
    x = 1,969,097,081.88/68,954.80
  6. Step 6: Final answer
    x = 28,556.35

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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.