Home / 71,619.42-98,837.04-39,790.86

Finding the Fourth Proportional to 71,619.42, 98,837.04 and 39,790.86

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Solution

The fourth proportional to 71,619.42, 98,837.04 and 39,790.86 is: 54,912.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,619.42 : 98,837.04 = 39,790.86 : x
  2. Step 2: Convert to fraction form
    71,619.42/98,837.04 = 39,790.86/x
  3. Step 3: Cross multiply
    71,619.42x = 98,837.04 × 39,790.86
  4. Step 4: Simplify right side
    71,619.42x = 3,932,810,821.45
  5. Step 5: Solve for x
    x = 3,932,810,821.45/71,619.42
  6. Step 6: Final answer
    x = 54,912.63

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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.