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Finding the Fourth Proportional to 77,168.88, 115,947.09 and 49,101.15

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Solution

The fourth proportional to 77,168.88, 115,947.09 and 49,101.15 is: 73,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,168.88 : 115,947.09 = 49,101.15 : x
  2. Step 2: Convert to fraction form
    77,168.88/115,947.09 = 49,101.15/x
  3. Step 3: Cross multiply
    77,168.88x = 115,947.09 × 49,101.15
  4. Step 4: Simplify right side
    77,168.88x = 5,693,135,458.15
  5. Step 5: Solve for x
    x = 5,693,135,458.15/77,168.88
  6. Step 6: Final answer
    x = 73,775.02

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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.