Home / 76,990.46-115,399.42-50,387.63

Finding the Fourth Proportional to 76,990.46, 115,399.42 and 50,387.63

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Solution

The fourth proportional to 76,990.46, 115,399.42 and 50,387.63 is: 75,524.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,990.46 : 115,399.42 = 50,387.63 : x
  2. Step 2: Convert to fraction form
    76,990.46/115,399.42 = 50,387.63/x
  3. Step 3: Cross multiply
    76,990.46x = 115,399.42 × 50,387.63
  4. Step 4: Simplify right side
    76,990.46x = 5,814,702,574.21
  5. Step 5: Solve for x
    x = 5,814,702,574.21/76,990.46
  6. Step 6: Final answer
    x = 75,524.98

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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.