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Finding the Fourth Proportional to 73,982.40, 110,900.70 and 36,511.80

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Solution

The fourth proportional to 73,982.40, 110,900.70 and 36,511.80 is: 54,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,982.40 : 110,900.70 = 36,511.80 : x
  2. Step 2: Convert to fraction form
    73,982.40/110,900.70 = 36,511.80/x
  3. Step 3: Cross multiply
    73,982.40x = 110,900.70 × 36,511.80
  4. Step 4: Simplify right side
    73,982.40x = 4,049,184,178.26
  5. Step 5: Solve for x
    x = 4,049,184,178.26/73,982.40
  6. Step 6: Final answer
    x = 54,731.72

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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.