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Finding the Fourth Proportional to 44,478, 66,685.80 and 20,759.88

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Solution

The fourth proportional to 44,478, 66,685.80 and 20,759.88 is: 31,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,478 : 66,685.80 = 20,759.88 : x
  2. Step 2: Convert to fraction form
    44,478/66,685.80 = 20,759.88/x
  3. Step 3: Cross multiply
    44,478x = 66,685.80 × 20,759.88
  4. Step 4: Simplify right side
    44,478x = 1,384,389,205.70
  5. Step 5: Solve for x
    x = 1,384,389,205.70/44,478
  6. Step 6: Final answer
    x = 31,125.26

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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.