Home / 81,319.52-122,118.87-49,914

Finding the Fourth Proportional to 81,319.52, 122,118.87 and 49,914

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Solution

The fourth proportional to 81,319.52, 122,118.87 and 49,914 is: 74,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,319.52 : 122,118.87 = 49,914 : x
  2. Step 2: Convert to fraction form
    81,319.52/122,118.87 = 49,914/x
  3. Step 3: Cross multiply
    81,319.52x = 122,118.87 × 49,914
  4. Step 4: Simplify right side
    81,319.52x = 6,095,441,464.36
  5. Step 5: Solve for x
    x = 6,095,441,464.36/81,319.52
  6. Step 6: Final answer
    x = 74,956.68

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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.