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Finding the Fourth Proportional to 57,728.54, 79,720.41 and 54,583.53

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Solution

The fourth proportional to 57,728.54, 79,720.41 and 54,583.53 is: 75,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,728.54 : 79,720.41 = 54,583.53 : x
  2. Step 2: Convert to fraction form
    57,728.54/79,720.41 = 54,583.53/x
  3. Step 3: Cross multiply
    57,728.54x = 79,720.41 × 54,583.53
  4. Step 4: Simplify right side
    57,728.54x = 4,351,421,390.85
  5. Step 5: Solve for x
    x = 4,351,421,390.85/57,728.54
  6. Step 6: Final answer
    x = 75,377.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.