Home / 51,687.86-71,340.37-31,540.43

Finding the Fourth Proportional to 51,687.86, 71,340.37 and 31,540.43

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Solution

The fourth proportional to 51,687.86, 71,340.37 and 31,540.43 is: 43,532.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,687.86 : 71,340.37 = 31,540.43 : x
  2. Step 2: Convert to fraction form
    51,687.86/71,340.37 = 31,540.43/x
  3. Step 3: Cross multiply
    51,687.86x = 71,340.37 × 31,540.43
  4. Step 4: Simplify right side
    51,687.86x = 2,250,106,045.66
  5. Step 5: Solve for x
    x = 2,250,106,045.66/51,687.86
  6. Step 6: Final answer
    x = 43,532.58

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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.