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Finding the Fourth Proportional to 69,810.54, 104,759.55 and 28,257.54

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Solution

The fourth proportional to 69,810.54, 104,759.55 and 28,257.54 is: 42,404.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,810.54 : 104,759.55 = 28,257.54 : x
  2. Step 2: Convert to fraction form
    69,810.54/104,759.55 = 28,257.54/x
  3. Step 3: Cross multiply
    69,810.54x = 104,759.55 × 28,257.54
  4. Step 4: Simplify right side
    69,810.54x = 2,960,247,174.51
  5. Step 5: Solve for x
    x = 2,960,247,174.51/69,810.54
  6. Step 6: Final answer
    x = 42,404.01

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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.