Home / 27,987.10-42,003.60-27,768.40

Finding the Fourth Proportional to 27,987.10, 42,003.60 and 27,768.40

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Solution

The fourth proportional to 27,987.10, 42,003.60 and 27,768.40 is: 41,675.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.10 : 42,003.60 = 27,768.40 : x
  2. Step 2: Convert to fraction form
    27,987.10/42,003.60 = 27,768.40/x
  3. Step 3: Cross multiply
    27,987.10x = 42,003.60 × 27,768.40
  4. Step 4: Simplify right side
    27,987.10x = 1,166,372,766.24
  5. Step 5: Solve for x
    x = 1,166,372,766.24/27,987.10
  6. Step 6: Final answer
    x = 41,675.37

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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.