Home / 81,641.20-122,347.74-44,120.38

Finding the Fourth Proportional to 81,641.20, 122,347.74 and 44,120.38

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Solution

The fourth proportional to 81,641.20, 122,347.74 and 44,120.38 is: 66,118.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,641.20 : 122,347.74 = 44,120.38 : x
  2. Step 2: Convert to fraction form
    81,641.20/122,347.74 = 44,120.38/x
  3. Step 3: Cross multiply
    81,641.20x = 122,347.74 × 44,120.38
  4. Step 4: Simplify right side
    81,641.20x = 5,398,028,780.94
  5. Step 5: Solve for x
    x = 5,398,028,780.94/81,641.20
  6. Step 6: Final answer
    x = 66,118.93

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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.