Home / 80,677.31-121,000.01-76,676.61

Finding the Fourth Proportional to 80,677.31, 121,000.01 and 76,676.61

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Solution

The fourth proportional to 80,677.31, 121,000.01 and 76,676.61 is: 114,999.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,677.31 : 121,000.01 = 76,676.61 : x
  2. Step 2: Convert to fraction form
    80,677.31/121,000.01 = 76,676.61/x
  3. Step 3: Cross multiply
    80,677.31x = 121,000.01 × 76,676.61
  4. Step 4: Simplify right side
    80,677.31x = 9,277,870,193.38
  5. Step 5: Solve for x
    x = 9,277,870,193.38/80,677.31
  6. Step 6: Final answer
    x = 114,999.75

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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.