Home / 84,111.26-126,153.98-30,790.67

Finding the Fourth Proportional to 84,111.26, 126,153.98 and 30,790.67

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Solution

The fourth proportional to 84,111.26, 126,153.98 and 30,790.67 is: 46,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,111.26 : 126,153.98 = 30,790.67 : x
  2. Step 2: Convert to fraction form
    84,111.26/126,153.98 = 30,790.67/x
  3. Step 3: Cross multiply
    84,111.26x = 126,153.98 × 30,790.67
  4. Step 4: Simplify right side
    84,111.26x = 3,884,365,413.41
  5. Step 5: Solve for x
    x = 3,884,365,413.41/84,111.26
  6. Step 6: Final answer
    x = 46,181.28

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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.