Home / 49,871.18-68,821.87-28,360.91

Finding the Fourth Proportional to 49,871.18, 68,821.87 and 28,360.91

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Solution

The fourth proportional to 49,871.18, 68,821.87 and 28,360.91 is: 39,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,871.18 : 68,821.87 = 28,360.91 : x
  2. Step 2: Convert to fraction form
    49,871.18/68,821.87 = 28,360.91/x
  3. Step 3: Cross multiply
    49,871.18x = 68,821.87 × 28,360.91
  4. Step 4: Simplify right side
    49,871.18x = 1,951,850,901.63
  5. Step 5: Solve for x
    x = 1,951,850,901.63/49,871.18
  6. Step 6: Final answer
    x = 39,137.86

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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.