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Finding the Fourth Proportional to 69,093.29, 103,639.94 and 19,173.40

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Solution

The fourth proportional to 69,093.29, 103,639.94 and 19,173.40 is: 28,760.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,093.29 : 103,639.94 = 19,173.40 : x
  2. Step 2: Convert to fraction form
    69,093.29/103,639.94 = 19,173.40/x
  3. Step 3: Cross multiply
    69,093.29x = 103,639.94 × 19,173.40
  4. Step 4: Simplify right side
    69,093.29x = 1,987,130,025.60
  5. Step 5: Solve for x
    x = 1,987,130,025.60/69,093.29
  6. Step 6: Final answer
    x = 28,760.10

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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.