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Finding the Fourth Proportional to 69,993.42, 104,822.87 and 38,355.90

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Solution

The fourth proportional to 69,993.42, 104,822.87 and 38,355.90 is: 57,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,993.42 : 104,822.87 = 38,355.90 : x
  2. Step 2: Convert to fraction form
    69,993.42/104,822.87 = 38,355.90/x
  3. Step 3: Cross multiply
    69,993.42x = 104,822.87 × 38,355.90
  4. Step 4: Simplify right side
    69,993.42x = 4,020,575,327.65
  5. Step 5: Solve for x
    x = 4,020,575,327.65/69,993.42
  6. Step 6: Final answer
    x = 57,442.19

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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.