Home / 77,511.20-115,975.20-51,267.20

Finding the Fourth Proportional to 77,511.20, 115,975.20 and 51,267.20

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Solution

The fourth proportional to 77,511.20, 115,975.20 and 51,267.20 is: 76,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,511.20 : 115,975.20 = 51,267.20 : x
  2. Step 2: Convert to fraction form
    77,511.20/115,975.20 = 51,267.20/x
  3. Step 3: Cross multiply
    77,511.20x = 115,975.20 × 51,267.20
  4. Step 4: Simplify right side
    77,511.20x = 5,945,723,773.44
  5. Step 5: Solve for x
    x = 5,945,723,773.44/77,511.20
  6. Step 6: Final answer
    x = 76,707.93

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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.