Home / 84,007.20-126,021.60-41,908.80

Finding the Fourth Proportional to 84,007.20, 126,021.60 and 41,908.80

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Solution

The fourth proportional to 84,007.20, 126,021.60 and 41,908.80 is: 62,868.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,007.20 : 126,021.60 = 41,908.80 : x
  2. Step 2: Convert to fraction form
    84,007.20/126,021.60 = 41,908.80/x
  3. Step 3: Cross multiply
    84,007.20x = 126,021.60 × 41,908.80
  4. Step 4: Simplify right side
    84,007.20x = 5,281,414,030.08
  5. Step 5: Solve for x
    x = 5,281,414,030.08/84,007.20
  6. Step 6: Final answer
    x = 62,868.59

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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.