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Finding the Fourth Proportional to 45,759.59, 68,623.30 and 13,729.11

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Solution

The fourth proportional to 45,759.59, 68,623.30 and 13,729.11 is: 20,588.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,759.59 : 68,623.30 = 13,729.11 : x
  2. Step 2: Convert to fraction form
    45,759.59/68,623.30 = 13,729.11/x
  3. Step 3: Cross multiply
    45,759.59x = 68,623.30 × 13,729.11
  4. Step 4: Simplify right side
    45,759.59x = 942,136,765.62
  5. Step 5: Solve for x
    x = 942,136,765.62/45,759.59
  6. Step 6: Final answer
    x = 20,588.84

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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.