Home / 80,783.22-121,226.67-39,207.54

Finding the Fourth Proportional to 80,783.22, 121,226.67 and 39,207.54

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Solution

The fourth proportional to 80,783.22, 121,226.67 and 39,207.54 is: 58,836.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,783.22 : 121,226.67 = 39,207.54 : x
  2. Step 2: Convert to fraction form
    80,783.22/121,226.67 = 39,207.54/x
  3. Step 3: Cross multiply
    80,783.22x = 121,226.67 × 39,207.54
  4. Step 4: Simplify right side
    80,783.22x = 4,752,999,513.09
  5. Step 5: Solve for x
    x = 4,752,999,513.09/80,783.22
  6. Step 6: Final answer
    x = 58,836.47

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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.