Home / 76,705.25-115,059.32-21,302.69

Finding the Fourth Proportional to 76,705.25, 115,059.32 and 21,302.69

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Solution

The fourth proportional to 76,705.25, 115,059.32 and 21,302.69 is: 31,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,705.25 : 115,059.32 = 21,302.69 : x
  2. Step 2: Convert to fraction form
    76,705.25/115,059.32 = 21,302.69/x
  3. Step 3: Cross multiply
    76,705.25x = 115,059.32 × 21,302.69
  4. Step 4: Simplify right side
    76,705.25x = 2,451,073,025.57
  5. Step 5: Solve for x
    x = 2,451,073,025.57/76,705.25
  6. Step 6: Final answer
    x = 31,954.44

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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.