Home / 54,776.16-82,157.76-21,520.80

Finding the Fourth Proportional to 54,776.16, 82,157.76 and 21,520.80

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Solution

The fourth proportional to 54,776.16, 82,157.76 and 21,520.80 is: 32,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,776.16 : 82,157.76 = 21,520.80 : x
  2. Step 2: Convert to fraction form
    54,776.16/82,157.76 = 21,520.80/x
  3. Step 3: Cross multiply
    54,776.16x = 82,157.76 × 21,520.80
  4. Step 4: Simplify right side
    54,776.16x = 1,768,100,721.41
  5. Step 5: Solve for x
    x = 1,768,100,721.41/54,776.16
  6. Step 6: Final answer
    x = 32,278.65

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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.