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Finding the Fourth Proportional to 49,274.60, 73,911.90 and 21,208.10

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Solution

The fourth proportional to 49,274.60, 73,911.90 and 21,208.10 is: 31,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,274.60 : 73,911.90 = 21,208.10 : x
  2. Step 2: Convert to fraction form
    49,274.60/73,911.90 = 21,208.10/x
  3. Step 3: Cross multiply
    49,274.60x = 73,911.90 × 21,208.10
  4. Step 4: Simplify right side
    49,274.60x = 1,567,530,966.39
  5. Step 5: Solve for x
    x = 1,567,530,966.39/49,274.60
  6. Step 6: Final answer
    x = 31,812.15

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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.