Home / 76,961.07-115,616.79-55,679.45

Finding the Fourth Proportional to 76,961.07, 115,616.79 and 55,679.45

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Solution

The fourth proportional to 76,961.07, 115,616.79 and 55,679.45 is: 83,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,961.07 : 115,616.79 = 55,679.45 : x
  2. Step 2: Convert to fraction form
    76,961.07/115,616.79 = 55,679.45/x
  3. Step 3: Cross multiply
    76,961.07x = 115,616.79 × 55,679.45
  4. Step 4: Simplify right side
    76,961.07x = 6,437,478,699.88
  5. Step 5: Solve for x
    x = 6,437,478,699.88/76,961.07
  6. Step 6: Final answer
    x = 83,645.91

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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.