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Finding the Fourth Proportional to 63,611.31, 87,786.35 and 35,317

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Solution

The fourth proportional to 63,611.31, 87,786.35 and 35,317 is: 48,738.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,611.31 : 87,786.35 = 35,317 : x
  2. Step 2: Convert to fraction form
    63,611.31/87,786.35 = 35,317/x
  3. Step 3: Cross multiply
    63,611.31x = 87,786.35 × 35,317
  4. Step 4: Simplify right side
    63,611.31x = 3,100,350,522.95
  5. Step 5: Solve for x
    x = 3,100,350,522.95/63,611.31
  6. Step 6: Final answer
    x = 48,738.98

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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.