Home / 39,930,920.40-55,104,669.72-21,596,205.36

Finding the Fourth Proportional to 39,930,920.40, 55,104,669.72 and 21,596,205.36

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Solution

The fourth proportional to 39,930,920.40, 55,104,669.72 and 21,596,205.36 is: 29,802,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930,920.40 : 55,104,669.72 = 21,596,205.36 : x
  2. Step 2: Convert to fraction form
    39,930,920.40/55,104,669.72 = 21,596,205.36/x
  3. Step 3: Cross multiply
    39,930,920.40x = 55,104,669.72 × 21,596,205.36
  4. Step 4: Simplify right side
    39,930,920.40x = 1,190,051,763,568,093.75
  5. Step 5: Solve for x
    x = 1,190,051,763,568,093.75/39,930,920.40
  6. Step 6: Final answer
    x = 29,802,763.16

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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.