Home / 49,974.18-68,972.31-28,749.30

Finding the Fourth Proportional to 49,974.18, 68,972.31 and 28,749.30

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Solution

The fourth proportional to 49,974.18, 68,972.31 and 28,749.30 is: 39,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,974.18 : 68,972.31 = 28,749.30 : x
  2. Step 2: Convert to fraction form
    49,974.18/68,972.31 = 28,749.30/x
  3. Step 3: Cross multiply
    49,974.18x = 68,972.31 × 28,749.30
  4. Step 4: Simplify right side
    49,974.18x = 1,982,905,631.88
  5. Step 5: Solve for x
    x = 1,982,905,631.88/49,974.18
  6. Step 6: Final answer
    x = 39,678.60

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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.