Home / 80,376.86-120,540.67-55,576.28

Finding the Fourth Proportional to 80,376.86, 120,540.67 and 55,576.28

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Solution

The fourth proportional to 80,376.86, 120,540.67 and 55,576.28 is: 83,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,376.86 : 120,540.67 = 55,576.28 : x
  2. Step 2: Convert to fraction form
    80,376.86/120,540.67 = 55,576.28/x
  3. Step 3: Cross multiply
    80,376.86x = 120,540.67 × 55,576.28
  4. Step 4: Simplify right side
    80,376.86x = 6,699,202,189.72
  5. Step 5: Solve for x
    x = 6,699,202,189.72/80,376.86
  6. Step 6: Final answer
    x = 83,347.40

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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.