Home / 76,890.20-115,150.62-39,351.56

Finding the Fourth Proportional to 76,890.20, 115,150.62 and 39,351.56

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Solution

The fourth proportional to 76,890.20, 115,150.62 and 39,351.56 is: 58,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.20 : 115,150.62 = 39,351.56 : x
  2. Step 2: Convert to fraction form
    76,890.20/115,150.62 = 39,351.56/x
  3. Step 3: Cross multiply
    76,890.20x = 115,150.62 × 39,351.56
  4. Step 4: Simplify right side
    76,890.20x = 4,531,356,531.97
  5. Step 5: Solve for x
    x = 4,531,356,531.97/76,890.20
  6. Step 6: Final answer
    x = 58,932.82

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1.5x scale

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.