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Finding the Fourth Proportional to 49,910.40, 74,894.40 and 18,748.80

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Solution

The fourth proportional to 49,910.40, 74,894.40 and 18,748.80 is: 28,134.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,910.40 : 74,894.40 = 18,748.80 : x
  2. Step 2: Convert to fraction form
    49,910.40/74,894.40 = 18,748.80/x
  3. Step 3: Cross multiply
    49,910.40x = 74,894.40 × 18,748.80
  4. Step 4: Simplify right side
    49,910.40x = 1,404,180,126.72
  5. Step 5: Solve for x
    x = 1,404,180,126.72/49,910.40
  6. Step 6: Final answer
    x = 28,134.02

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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.