Home / 5,175,969.62-7,142,742.38-2,821,187.66

Finding the Fourth Proportional to 5,175,969.62, 7,142,742.38 and 2,821,187.66

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Solution

The fourth proportional to 5,175,969.62, 7,142,742.38 and 2,821,187.66 is: 3,893,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175,969.62 : 7,142,742.38 = 2,821,187.66 : x
  2. Step 2: Convert to fraction form
    5,175,969.62/7,142,742.38 = 2,821,187.66/x
  3. Step 3: Cross multiply
    5,175,969.62x = 7,142,742.38 × 2,821,187.66
  4. Step 4: Simplify right side
    5,175,969.62x = 20,151,016,661,015.03
  5. Step 5: Solve for x
    x = 20,151,016,661,015.03/5,175,969.62
  6. Step 6: Final answer
    x = 3,893,186.81

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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.