Home / 66,930.41-100,426.26-28,991.28

Finding the Fourth Proportional to 66,930.41, 100,426.26 and 28,991.28

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Solution

The fourth proportional to 66,930.41, 100,426.26 and 28,991.28 is: 43,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930.41 : 100,426.26 = 28,991.28 : x
  2. Step 2: Convert to fraction form
    66,930.41/100,426.26 = 28,991.28/x
  3. Step 3: Cross multiply
    66,930.41x = 100,426.26 × 28,991.28
  4. Step 4: Simplify right side
    66,930.41x = 2,911,485,768.65
  5. Step 5: Solve for x
    x = 2,911,485,768.65/66,930.41
  6. Step 6: Final answer
    x = 43,500.19

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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.