Home / 39,870,736.88-55,021,638.96-21,536,022.38

Finding the Fourth Proportional to 39,870,736.88, 55,021,638.96 and 21,536,022.38

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Solution

The fourth proportional to 39,870,736.88, 55,021,638.96 and 21,536,022.38 is: 29,719,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,736.88 : 55,021,638.96 = 21,536,022.38 : x
  2. Step 2: Convert to fraction form
    39,870,736.88/55,021,638.96 = 21,536,022.38/x
  3. Step 3: Cross multiply
    39,870,736.88x = 55,021,638.96 × 21,536,022.38
  4. Step 4: Simplify right side
    39,870,736.88x = 1,184,947,247,751,731.75
  5. Step 5: Solve for x
    x = 1,184,947,247,751,731.75/39,870,736.88
  6. Step 6: Final answer
    x = 29,719,722.80

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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.