Home / 60,418.98-90,638.19-20,987.37

Finding the Fourth Proportional to 60,418.98, 90,638.19 and 20,987.37

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Solution

The fourth proportional to 60,418.98, 90,638.19 and 20,987.37 is: 31,484.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,418.98 : 90,638.19 = 20,987.37 : x
  2. Step 2: Convert to fraction form
    60,418.98/90,638.19 = 20,987.37/x
  3. Step 3: Cross multiply
    60,418.98x = 90,638.19 × 20,987.37
  4. Step 4: Simplify right side
    60,418.98x = 1,902,257,229.66
  5. Step 5: Solve for x
    x = 1,902,257,229.66/60,418.98
  6. Step 6: Final answer
    x = 31,484.43

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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.