Home / 84,623.88-126,942.20-28,464.16

Finding the Fourth Proportional to 84,623.88, 126,942.20 and 28,464.16

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Solution

The fourth proportional to 84,623.88, 126,942.20 and 28,464.16 is: 42,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,623.88 : 126,942.20 = 28,464.16 : x
  2. Step 2: Convert to fraction form
    84,623.88/126,942.20 = 28,464.16/x
  3. Step 3: Cross multiply
    84,623.88x = 126,942.20 × 28,464.16
  4. Step 4: Simplify right side
    84,623.88x = 3,613,303,091.55
  5. Step 5: Solve for x
    x = 3,613,303,091.55/84,623.88
  6. Step 6: Final answer
    x = 42,698.39

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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.