Home / 69,110.75-103,654.55-19,195.90

Finding the Fourth Proportional to 69,110.75, 103,654.55 and 19,195.90

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Solution

The fourth proportional to 69,110.75, 103,654.55 and 19,195.90 is: 28,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,110.75 : 103,654.55 = 19,195.90 : x
  2. Step 2: Convert to fraction form
    69,110.75/103,654.55 = 19,195.90/x
  3. Step 3: Cross multiply
    69,110.75x = 103,654.55 × 19,195.90
  4. Step 4: Simplify right side
    69,110.75x = 1,989,742,165.20
  5. Step 5: Solve for x
    x = 1,989,742,165.20/69,110.75
  6. Step 6: Final answer
    x = 28,790.63

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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.