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Finding the Fourth Proportional to 63,642.78, 87,842.94 and 36,800.78

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Solution

The fourth proportional to 63,642.78, 87,842.94 and 36,800.78 is: 50,794.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,642.78 : 87,842.94 = 36,800.78 : x
  2. Step 2: Convert to fraction form
    63,642.78/87,842.94 = 36,800.78/x
  3. Step 3: Cross multiply
    63,642.78x = 87,842.94 × 36,800.78
  4. Step 4: Simplify right side
    63,642.78x = 3,232,688,709.49
  5. Step 5: Solve for x
    x = 3,232,688,709.49/63,642.78
  6. Step 6: Final answer
    x = 50,794.27

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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.