Home / 92,811.90-127,983.60-55,078.86

Finding the Fourth Proportional to 92,811.90, 127,983.60 and 55,078.86

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Solution

The fourth proportional to 92,811.90, 127,983.60 and 55,078.86 is: 75,951.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,811.90 : 127,983.60 = 55,078.86 : x
  2. Step 2: Convert to fraction form
    92,811.90/127,983.60 = 55,078.86/x
  3. Step 3: Cross multiply
    92,811.90x = 127,983.60 × 55,078.86
  4. Step 4: Simplify right side
    92,811.90x = 7,049,190,786.70
  5. Step 5: Solve for x
    x = 7,049,190,786.70/92,811.90
  6. Step 6: Final answer
    x = 75,951.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.