Home / 47,051.78-70,578.09-11,991.42

Finding the Fourth Proportional to 47,051.78, 70,578.09 and 11,991.42

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Solution

The fourth proportional to 47,051.78, 70,578.09 and 11,991.42 is: 17,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,051.78 : 70,578.09 = 11,991.42 : x
  2. Step 2: Convert to fraction form
    47,051.78/70,578.09 = 11,991.42/x
  3. Step 3: Cross multiply
    47,051.78x = 70,578.09 × 11,991.42
  4. Step 4: Simplify right side
    47,051.78x = 846,331,519.99
  5. Step 5: Solve for x
    x = 846,331,519.99/47,051.78
  6. Step 6: Final answer
    x = 17,987.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.