Home / 76,769.82-115,080.75-39,347.46

Finding the Fourth Proportional to 76,769.82, 115,080.75 and 39,347.46

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Solution

The fourth proportional to 76,769.82, 115,080.75 and 39,347.46 is: 58,983.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,769.82 : 115,080.75 = 39,347.46 : x
  2. Step 2: Convert to fraction form
    76,769.82/115,080.75 = 39,347.46/x
  3. Step 3: Cross multiply
    76,769.82x = 115,080.75 × 39,347.46
  4. Step 4: Simplify right side
    76,769.82x = 4,528,135,207.40
  5. Step 5: Solve for x
    x = 4,528,135,207.40/76,769.82
  6. Step 6: Final answer
    x = 58,983.27

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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.