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Finding the Fourth Proportional to 63,687.75, 87,892.74 and 35,402.55

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Solution

The fourth proportional to 63,687.75, 87,892.74 and 35,402.55 is: 48,857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,687.75 : 87,892.74 = 35,402.55 : x
  2. Step 2: Convert to fraction form
    63,687.75/87,892.74 = 35,402.55/x
  3. Step 3: Cross multiply
    63,687.75x = 87,892.74 × 35,402.55
  4. Step 4: Simplify right side
    63,687.75x = 3,111,627,122.49
  5. Step 5: Solve for x
    x = 3,111,627,122.49/63,687.75
  6. Step 6: Final answer
    x = 48,857.55

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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.