Home / 81,495.15-122,078.70-54,923.10

Finding the Fourth Proportional to 81,495.15, 122,078.70 and 54,923.10

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Solution

The fourth proportional to 81,495.15, 122,078.70 and 54,923.10 is: 82,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,495.15 : 122,078.70 = 54,923.10 : x
  2. Step 2: Convert to fraction form
    81,495.15/122,078.70 = 54,923.10/x
  3. Step 3: Cross multiply
    81,495.15x = 122,078.70 × 54,923.10
  4. Step 4: Simplify right side
    81,495.15x = 6,704,940,647.97
  5. Step 5: Solve for x
    x = 6,704,940,647.97/81,495.15
  6. Step 6: Final answer
    x = 82,274.11

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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.