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Finding the Fourth Proportional to 49,539, 68,362.92 and 28,028.52

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Solution

The fourth proportional to 49,539, 68,362.92 and 28,028.52 is: 38,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,539 : 68,362.92 = 28,028.52 : x
  2. Step 2: Convert to fraction form
    49,539/68,362.92 = 28,028.52/x
  3. Step 3: Cross multiply
    49,539x = 68,362.92 × 28,028.52
  4. Step 4: Simplify right side
    49,539x = 1,916,111,470.48
  5. Step 5: Solve for x
    x = 1,916,111,470.48/49,539
  6. Step 6: Final answer
    x = 38,678.85

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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.