Home / 40,769.91-61,138.47-12,680.64

Finding the Fourth Proportional to 40,769.91, 61,138.47 and 12,680.64

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Solution

The fourth proportional to 40,769.91, 61,138.47 and 12,680.64 is: 19,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,769.91 : 61,138.47 = 12,680.64 : x
  2. Step 2: Convert to fraction form
    40,769.91/61,138.47 = 12,680.64/x
  3. Step 3: Cross multiply
    40,769.91x = 61,138.47 × 12,680.64
  4. Step 4: Simplify right side
    40,769.91x = 775,274,928.22
  5. Step 5: Solve for x
    x = 775,274,928.22/40,769.91
  6. Step 6: Final answer
    x = 19,015.86

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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.