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Finding the Fourth Proportional to 63,636.82, 87,825.70 and 40,687.44

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Solution

The fourth proportional to 63,636.82, 87,825.70 and 40,687.44 is: 56,153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,636.82 : 87,825.70 = 40,687.44 : x
  2. Step 2: Convert to fraction form
    63,636.82/87,825.70 = 40,687.44/x
  3. Step 3: Cross multiply
    63,636.82x = 87,825.70 × 40,687.44
  4. Step 4: Simplify right side
    63,636.82x = 3,573,402,899.21
  5. Step 5: Solve for x
    x = 3,573,402,899.21/63,636.82
  6. Step 6: Final answer
    x = 56,153.07

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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.