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Finding the Fourth Proportional to 68,987.87, 103,461.81 and 26,858.56

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Solution

The fourth proportional to 68,987.87, 103,461.81 and 26,858.56 is: 40,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,987.87 : 103,461.81 = 26,858.56 : x
  2. Step 2: Convert to fraction form
    68,987.87/103,461.81 = 26,858.56/x
  3. Step 3: Cross multiply
    68,987.87x = 103,461.81 × 26,858.56
  4. Step 4: Simplify right side
    68,987.87x = 2,778,834,972.94
  5. Step 5: Solve for x
    x = 2,778,834,972.94/68,987.87
  6. Step 6: Final answer
    x = 40,280.05

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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.