Home / 81,827.12-122,740.83-25,671.66

Finding the Fourth Proportional to 81,827.12, 122,740.83 and 25,671.66

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Solution

The fourth proportional to 81,827.12, 122,740.83 and 25,671.66 is: 38,507.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,827.12 : 122,740.83 = 25,671.66 : x
  2. Step 2: Convert to fraction form
    81,827.12/122,740.83 = 25,671.66/x
  3. Step 3: Cross multiply
    81,827.12x = 122,740.83 × 25,671.66
  4. Step 4: Simplify right side
    81,827.12x = 3,150,960,855.88
  5. Step 5: Solve for x
    x = 3,150,960,855.88/81,827.12
  6. Step 6: Final answer
    x = 38,507.54

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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.