Home / 80,520.16-120,750-27,916.96

Finding the Fourth Proportional to 80,520.16, 120,750 and 27,916.96

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Solution

The fourth proportional to 80,520.16, 120,750 and 27,916.96 is: 41,864.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.16 : 120,750 = 27,916.96 : x
  2. Step 2: Convert to fraction form
    80,520.16/120,750 = 27,916.96/x
  3. Step 3: Cross multiply
    80,520.16x = 120,750 × 27,916.96
  4. Step 4: Simplify right side
    80,520.16x = 3,370,972,920
  5. Step 5: Solve for x
    x = 3,370,972,920/80,520.16
  6. Step 6: Final answer
    x = 41,864.96

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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.