Home / 40,930.20-61,395.30-21,214.80

Finding the Fourth Proportional to 40,930.20, 61,395.30 and 21,214.80

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Solution

The fourth proportional to 40,930.20, 61,395.30 and 21,214.80 is: 31,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,930.20 : 61,395.30 = 21,214.80 : x
  2. Step 2: Convert to fraction form
    40,930.20/61,395.30 = 21,214.80/x
  3. Step 3: Cross multiply
    40,930.20x = 61,395.30 × 21,214.80
  4. Step 4: Simplify right side
    40,930.20x = 1,302,489,010.44
  5. Step 5: Solve for x
    x = 1,302,489,010.44/40,930.20
  6. Step 6: Final answer
    x = 31,822.20

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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.