Home / 53,297.25-79,940.21-28,310.78

Finding the Fourth Proportional to 53,297.25, 79,940.21 and 28,310.78

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Solution

The fourth proportional to 53,297.25, 79,940.21 and 28,310.78 is: 42,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,297.25 : 79,940.21 = 28,310.78 : x
  2. Step 2: Convert to fraction form
    53,297.25/79,940.21 = 28,310.78/x
  3. Step 3: Cross multiply
    53,297.25x = 79,940.21 × 28,310.78
  4. Step 4: Simplify right side
    53,297.25x = 2,263,169,157.21
  5. Step 5: Solve for x
    x = 2,263,169,157.21/53,297.25
  6. Step 6: Final answer
    x = 42,463.15

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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.