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Finding the Fourth Proportional to 50,367.70, 69,479.80 and 31,240.87

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Solution

The fourth proportional to 50,367.70, 69,479.80 and 31,240.87 is: 43,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,367.70 : 69,479.80 = 31,240.87 : x
  2. Step 2: Convert to fraction form
    50,367.70/69,479.80 = 31,240.87/x
  3. Step 3: Cross multiply
    50,367.70x = 69,479.80 × 31,240.87
  4. Step 4: Simplify right side
    50,367.70x = 2,170,609,399.43
  5. Step 5: Solve for x
    x = 2,170,609,399.43/50,367.70
  6. Step 6: Final answer
    x = 43,095.27

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1.5x scale

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.