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Finding the Fourth Proportional to 48,561.53, 72,851.49 and 18,977.49

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Solution

The fourth proportional to 48,561.53, 72,851.49 and 18,977.49 is: 28,469.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,561.53 : 72,851.49 = 18,977.49 : x
  2. Step 2: Convert to fraction form
    48,561.53/72,851.49 = 18,977.49/x
  3. Step 3: Cross multiply
    48,561.53x = 72,851.49 × 18,977.49
  4. Step 4: Simplify right side
    48,561.53x = 1,382,538,422.96
  5. Step 5: Solve for x
    x = 1,382,538,422.96/48,561.53
  6. Step 6: Final answer
    x = 28,469.83

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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.