Home / 39,957,820.12-55,141,791.96-21,623,105.80

Finding the Fourth Proportional to 39,957,820.12, 55,141,791.96 and 21,623,105.80

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Solution

The fourth proportional to 39,957,820.12, 55,141,791.96 and 21,623,105.80 is: 29,839,886.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,957,820.12 : 55,141,791.96 = 21,623,105.80 : x
  2. Step 2: Convert to fraction form
    39,957,820.12/55,141,791.96 = 21,623,105.80/x
  3. Step 3: Cross multiply
    39,957,820.12x = 55,141,791.96 × 21,623,105.80
  4. Step 4: Simplify right side
    39,957,820.12x = 1,192,336,801,552,669.50
  5. Step 5: Solve for x
    x = 1,192,336,801,552,669.50/39,957,820.12
  6. Step 6: Final answer
    x = 29,839,886.11

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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.