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Finding the Fourth Proportional to 63,635.82, 87,824.31 and 40,686.44

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Solution

The fourth proportional to 63,635.82, 87,824.31 and 40,686.44 is: 56,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,635.82 : 87,824.31 = 40,686.44 : x
  2. Step 2: Convert to fraction form
    63,635.82/87,824.31 = 40,686.44/x
  3. Step 3: Cross multiply
    63,635.82x = 87,824.31 × 40,686.44
  4. Step 4: Simplify right side
    63,635.82x = 3,573,258,519.36
  5. Step 5: Solve for x
    x = 3,573,258,519.36/63,635.82
  6. Step 6: Final answer
    x = 56,151.68

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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.