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Finding the Fourth Proportional to 49,238.78, 67,949.78 and 28,018.04

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Solution

The fourth proportional to 49,238.78, 67,949.78 and 28,018.04 is: 38,665.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,238.78 : 67,949.78 = 28,018.04 : x
  2. Step 2: Convert to fraction form
    49,238.78/67,949.78 = 28,018.04/x
  3. Step 3: Cross multiply
    49,238.78x = 67,949.78 × 28,018.04
  4. Step 4: Simplify right side
    49,238.78x = 1,903,819,174.19
  5. Step 5: Solve for x
    x = 1,903,819,174.19/49,238.78
  6. Step 6: Final answer
    x = 38,665.04

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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.