Home / 81,137.89-111,968.10-44,342.65

Finding the Fourth Proportional to 81,137.89, 111,968.10 and 44,342.65

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Solution

The fourth proportional to 81,137.89, 111,968.10 and 44,342.65 is: 61,191.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,137.89 : 111,968.10 = 44,342.65 : x
  2. Step 2: Convert to fraction form
    81,137.89/111,968.10 = 44,342.65/x
  3. Step 3: Cross multiply
    81,137.89x = 111,968.10 × 44,342.65
  4. Step 4: Simplify right side
    81,137.89x = 4,964,962,269.47
  5. Step 5: Solve for x
    x = 4,964,962,269.47/81,137.89
  6. Step 6: Final answer
    x = 61,191.66

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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.