Home / 39,792.11-54,913.98-21,888.02

Finding the Fourth Proportional to 39,792.11, 54,913.98 and 21,888.02

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Solution

The fourth proportional to 39,792.11, 54,913.98 and 21,888.02 is: 30,205.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,792.11 : 54,913.98 = 21,888.02 : x
  2. Step 2: Convert to fraction form
    39,792.11/54,913.98 = 21,888.02/x
  3. Step 3: Cross multiply
    39,792.11x = 54,913.98 × 21,888.02
  4. Step 4: Simplify right side
    39,792.11x = 1,201,958,017.95
  5. Step 5: Solve for x
    x = 1,201,958,017.95/39,792.11
  6. Step 6: Final answer
    x = 30,205.94

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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.