Home / 76,787.82-115,107.75-39,365.46

Finding the Fourth Proportional to 76,787.82, 115,107.75 and 39,365.46

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Solution

The fourth proportional to 76,787.82, 115,107.75 and 39,365.46 is: 59,010.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,787.82 : 115,107.75 = 39,365.46 : x
  2. Step 2: Convert to fraction form
    76,787.82/115,107.75 = 39,365.46/x
  3. Step 3: Cross multiply
    76,787.82x = 115,107.75 × 39,365.46
  4. Step 4: Simplify right side
    76,787.82x = 4,531,269,528.32
  5. Step 5: Solve for x
    x = 4,531,269,528.32/76,787.82
  6. Step 6: Final answer
    x = 59,010.26

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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.