Home / 76,768.25-115,136.49-20,595.05

Finding the Fourth Proportional to 76,768.25, 115,136.49 and 20,595.05

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Solution

The fourth proportional to 76,768.25, 115,136.49 and 20,595.05 is: 30,888.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.25 : 115,136.49 = 20,595.05 : x
  2. Step 2: Convert to fraction form
    76,768.25/115,136.49 = 20,595.05/x
  3. Step 3: Cross multiply
    76,768.25x = 115,136.49 × 20,595.05
  4. Step 4: Simplify right side
    76,768.25x = 2,371,241,192.69
  5. Step 5: Solve for x
    x = 2,371,241,192.69/76,768.25
  6. Step 6: Final answer
    x = 30,888.31

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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.