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Finding the Fourth Proportional to 44,955.56, 67,431.72 and 13,790

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Solution

The fourth proportional to 44,955.56, 67,431.72 and 13,790 is: 20,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,955.56 : 67,431.72 = 13,790 : x
  2. Step 2: Convert to fraction form
    44,955.56/67,431.72 = 13,790/x
  3. Step 3: Cross multiply
    44,955.56x = 67,431.72 × 13,790
  4. Step 4: Simplify right side
    44,955.56x = 929,883,418.80
  5. Step 5: Solve for x
    x = 929,883,418.80/44,955.56
  6. Step 6: Final answer
    x = 20,684.50

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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.