Home / 81,918.54-122,925.60-34,530.75

Finding the Fourth Proportional to 81,918.54, 122,925.60 and 34,530.75

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Solution

The fourth proportional to 81,918.54, 122,925.60 and 34,530.75 is: 51,816.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,918.54 : 122,925.60 = 34,530.75 : x
  2. Step 2: Convert to fraction form
    81,918.54/122,925.60 = 34,530.75/x
  3. Step 3: Cross multiply
    81,918.54x = 122,925.60 × 34,530.75
  4. Step 4: Simplify right side
    81,918.54x = 4,244,713,162.20
  5. Step 5: Solve for x
    x = 4,244,713,162.20/81,918.54
  6. Step 6: Final answer
    x = 51,816.27

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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.