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Finding the Fourth Proportional to 49,974.68, 68,973 and 28,749.80

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Solution

The fourth proportional to 49,974.68, 68,973 and 28,749.80 is: 39,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,974.68 : 68,973 = 28,749.80 : x
  2. Step 2: Convert to fraction form
    49,974.68/68,973 = 28,749.80/x
  3. Step 3: Cross multiply
    49,974.68x = 68,973 × 28,749.80
  4. Step 4: Simplify right side
    49,974.68x = 1,982,959,955.40
  5. Step 5: Solve for x
    x = 1,982,959,955.40/49,974.68
  6. Step 6: Final answer
    x = 39,679.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.