Home / 78,372.48-117,558.72-25,767.84

Finding the Fourth Proportional to 78,372.48, 117,558.72 and 25,767.84

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Solution

The fourth proportional to 78,372.48, 117,558.72 and 25,767.84 is: 38,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,372.48 : 117,558.72 = 25,767.84 : x
  2. Step 2: Convert to fraction form
    78,372.48/117,558.72 = 25,767.84/x
  3. Step 3: Cross multiply
    78,372.48x = 117,558.72 × 25,767.84
  4. Step 4: Simplify right side
    78,372.48x = 3,029,234,287.56
  5. Step 5: Solve for x
    x = 3,029,234,287.56/78,372.48
  6. Step 6: Final answer
    x = 38,651.76

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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.