Home / 81,213.90-112,109.73-49,393.02

Finding the Fourth Proportional to 81,213.90, 112,109.73 and 49,393.02

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Solution

The fourth proportional to 81,213.90, 112,109.73 and 49,393.02 is: 68,183.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,213.90 : 112,109.73 = 49,393.02 : x
  2. Step 2: Convert to fraction form
    81,213.90/112,109.73 = 49,393.02/x
  3. Step 3: Cross multiply
    81,213.90x = 112,109.73 × 49,393.02
  4. Step 4: Simplify right side
    81,213.90x = 5,537,438,136.08
  5. Step 5: Solve for x
    x = 5,537,438,136.08/81,213.90
  6. Step 6: Final answer
    x = 68,183.38

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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.