Home / 84,745.22-127,077.42-31,400.60

Finding the Fourth Proportional to 84,745.22, 127,077.42 and 31,400.60

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Solution

The fourth proportional to 84,745.22, 127,077.42 and 31,400.60 is: 47,085.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,745.22 : 127,077.42 = 31,400.60 : x
  2. Step 2: Convert to fraction form
    84,745.22/127,077.42 = 31,400.60/x
  3. Step 3: Cross multiply
    84,745.22x = 127,077.42 × 31,400.60
  4. Step 4: Simplify right side
    84,745.22x = 3,990,307,234.45
  5. Step 5: Solve for x
    x = 3,990,307,234.45/84,745.22
  6. Step 6: Final answer
    x = 47,085.93

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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.