Home / 39,915,749.70-55,083,687.93-21,580,991.46

Finding the Fourth Proportional to 39,915,749.70, 55,083,687.93 and 21,580,991.46

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Solution

The fourth proportional to 39,915,749.70, 55,083,687.93 and 21,580,991.46 is: 29,781,742.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,915,749.70 : 55,083,687.93 = 21,580,991.46 : x
  2. Step 2: Convert to fraction form
    39,915,749.70/55,083,687.93 = 21,580,991.46/x
  3. Step 3: Cross multiply
    39,915,749.70x = 55,083,687.93 × 21,580,991.46
  4. Step 4: Simplify right side
    39,915,749.70x = 1,188,760,598,802,635
  5. Step 5: Solve for x
    x = 1,188,760,598,802,635/39,915,749.70
  6. Step 6: Final answer
    x = 29,781,742.99

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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.