Home / 76,780.68-115,180.72-30,027.48

Finding the Fourth Proportional to 76,780.68, 115,180.72 and 30,027.48

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Solution

The fourth proportional to 76,780.68, 115,180.72 and 30,027.48 is: 45,045.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,780.68 : 115,180.72 = 30,027.48 : x
  2. Step 2: Convert to fraction form
    76,780.68/115,180.72 = 30,027.48/x
  3. Step 3: Cross multiply
    76,780.68x = 115,180.72 × 30,027.48
  4. Step 4: Simplify right side
    76,780.68x = 3,458,586,766.19
  5. Step 5: Solve for x
    x = 3,458,586,766.19/76,780.68
  6. Step 6: Final answer
    x = 45,045.01

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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.