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Finding the Fourth Proportional to 68,390.73, 102,587.31 and 36,826.65

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Solution

The fourth proportional to 68,390.73, 102,587.31 and 36,826.65 is: 55,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.73 : 102,587.31 = 36,826.65 : x
  2. Step 2: Convert to fraction form
    68,390.73/102,587.31 = 36,826.65/x
  3. Step 3: Cross multiply
    68,390.73x = 102,587.31 × 36,826.65
  4. Step 4: Simplify right side
    68,390.73x = 3,777,946,959.81
  5. Step 5: Solve for x
    x = 3,777,946,959.81/68,390.73
  6. Step 6: Final answer
    x = 55,240.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.