Home / 49,780.80-68,668.56-31,869.36

Finding the Fourth Proportional to 49,780.80, 68,668.56 and 31,869.36

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Solution

The fourth proportional to 49,780.80, 68,668.56 and 31,869.36 is: 43,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,780.80 : 68,668.56 = 31,869.36 : x
  2. Step 2: Convert to fraction form
    49,780.80/68,668.56 = 31,869.36/x
  3. Step 3: Cross multiply
    49,780.80x = 68,668.56 × 31,869.36
  4. Step 4: Simplify right side
    49,780.80x = 2,188,423,059.32
  5. Step 5: Solve for x
    x = 2,188,423,059.32/49,780.80
  6. Step 6: Final answer
    x = 43,961.19

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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.