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Finding the Fourth Proportional to 34,620.80, 51,988.80 and 19,049.60

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Solution

The fourth proportional to 34,620.80, 51,988.80 and 19,049.60 is: 28,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,620.80 : 51,988.80 = 19,049.60 : x
  2. Step 2: Convert to fraction form
    34,620.80/51,988.80 = 19,049.60/x
  3. Step 3: Cross multiply
    34,620.80x = 51,988.80 × 19,049.60
  4. Step 4: Simplify right side
    34,620.80x = 990,365,844.48
  5. Step 5: Solve for x
    x = 990,365,844.48/34,620.80
  6. Step 6: Final answer
    x = 28,606.09

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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.