Home / 77,020.67-115,380.65-50,645.45

Finding the Fourth Proportional to 77,020.67, 115,380.65 and 50,645.45

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Solution

The fourth proportional to 77,020.67, 115,380.65 and 50,645.45 is: 75,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,020.67 : 115,380.65 = 50,645.45 : x
  2. Step 2: Convert to fraction form
    77,020.67/115,380.65 = 50,645.45/x
  3. Step 3: Cross multiply
    77,020.67x = 115,380.65 × 50,645.45
  4. Step 4: Simplify right side
    77,020.67x = 5,843,505,355.61
  5. Step 5: Solve for x
    x = 5,843,505,355.61/77,020.67
  6. Step 6: Final answer
    x = 75,869.31

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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.