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Finding the Fourth Proportional to 68,634.32, 102,950.40 and 21,886.88

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Solution

The fourth proportional to 68,634.32, 102,950.40 and 21,886.88 is: 32,829.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,634.32 : 102,950.40 = 21,886.88 : x
  2. Step 2: Convert to fraction form
    68,634.32/102,950.40 = 21,886.88/x
  3. Step 3: Cross multiply
    68,634.32x = 102,950.40 × 21,886.88
  4. Step 4: Simplify right side
    68,634.32x = 2,253,263,050.75
  5. Step 5: Solve for x
    x = 2,253,263,050.75/68,634.32
  6. Step 6: Final answer
    x = 32,829.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.