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Finding the Fourth Proportional to 68,504.59, 102,815.21 and 26,980.75

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Solution

The fourth proportional to 68,504.59, 102,815.21 and 26,980.75 is: 40,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,504.59 : 102,815.21 = 26,980.75 : x
  2. Step 2: Convert to fraction form
    68,504.59/102,815.21 = 26,980.75/x
  3. Step 3: Cross multiply
    68,504.59x = 102,815.21 × 26,980.75
  4. Step 4: Simplify right side
    68,504.59x = 2,774,031,477.21
  5. Step 5: Solve for x
    x = 2,774,031,477.21/68,504.59
  6. Step 6: Final answer
    x = 40,494.10

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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.