Home / 76,828.66-115,233.27-30,114.34

Finding the Fourth Proportional to 76,828.66, 115,233.27 and 30,114.34

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Solution

The fourth proportional to 76,828.66, 115,233.27 and 30,114.34 is: 45,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,828.66 : 115,233.27 = 30,114.34 : x
  2. Step 2: Convert to fraction form
    76,828.66/115,233.27 = 30,114.34/x
  3. Step 3: Cross multiply
    76,828.66x = 115,233.27 × 30,114.34
  4. Step 4: Simplify right side
    76,828.66x = 3,470,173,872.09
  5. Step 5: Solve for x
    x = 3,470,173,872.09/76,828.66
  6. Step 6: Final answer
    x = 45,167.70

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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.