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Finding the Fourth Proportional to 49,953.70, 74,959.35 and 18,811.30

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Solution

The fourth proportional to 49,953.70, 74,959.35 and 18,811.30 is: 28,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,953.70 : 74,959.35 = 18,811.30 : x
  2. Step 2: Convert to fraction form
    49,953.70/74,959.35 = 18,811.30/x
  3. Step 3: Cross multiply
    49,953.70x = 74,959.35 × 18,811.30
  4. Step 4: Simplify right side
    49,953.70x = 1,410,082,820.66
  5. Step 5: Solve for x
    x = 1,410,082,820.66/49,953.70
  6. Step 6: Final answer
    x = 28,227.80

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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.