Home / 40,976.80-61,484.40-21,277.60

Finding the Fourth Proportional to 40,976.80, 61,484.40 and 21,277.60

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Solution

The fourth proportional to 40,976.80, 61,484.40 and 21,277.60 is: 31,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,976.80 : 61,484.40 = 21,277.60 : x
  2. Step 2: Convert to fraction form
    40,976.80/61,484.40 = 21,277.60/x
  3. Step 3: Cross multiply
    40,976.80x = 61,484.40 × 21,277.60
  4. Step 4: Simplify right side
    40,976.80x = 1,308,240,469.44
  5. Step 5: Solve for x
    x = 1,308,240,469.44/40,976.80
  6. Step 6: Final answer
    x = 31,926.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.