Home / 80,940.78-111,698.75-45,133.05

Finding the Fourth Proportional to 80,940.78, 111,698.75 and 45,133.05

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Solution

The fourth proportional to 80,940.78, 111,698.75 and 45,133.05 is: 62,283.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,940.78 : 111,698.75 = 45,133.05 : x
  2. Step 2: Convert to fraction form
    80,940.78/111,698.75 = 45,133.05/x
  3. Step 3: Cross multiply
    80,940.78x = 111,698.75 × 45,133.05
  4. Step 4: Simplify right side
    80,940.78x = 5,041,305,381.52
  5. Step 5: Solve for x
    x = 5,041,305,381.52/80,940.78
  6. Step 6: Final answer
    x = 62,283.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.