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Finding the Fourth Proportional to 80,471.45, 111,045.43 and 44,661.49

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Solution

The fourth proportional to 80,471.45, 111,045.43 and 44,661.49 is: 61,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,471.45 : 111,045.43 = 44,661.49 : x
  2. Step 2: Convert to fraction form
    80,471.45/111,045.43 = 44,661.49/x
  3. Step 3: Cross multiply
    80,471.45x = 111,045.43 × 44,661.49
  4. Step 4: Simplify right side
    80,471.45x = 4,959,454,139.70
  5. Step 5: Solve for x
    x = 4,959,454,139.70/80,471.45
  6. Step 6: Final answer
    x = 61,629.98

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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.