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Finding the Fourth Proportional to 45,819.80, 68,729.70 and 44,070.20

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Solution

The fourth proportional to 45,819.80, 68,729.70 and 44,070.20 is: 66,105.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,819.80 : 68,729.70 = 44,070.20 : x
  2. Step 2: Convert to fraction form
    45,819.80/68,729.70 = 44,070.20/x
  3. Step 3: Cross multiply
    45,819.80x = 68,729.70 × 44,070.20
  4. Step 4: Simplify right side
    45,819.80x = 3,028,931,624.94
  5. Step 5: Solve for x
    x = 3,028,931,624.94/45,819.80
  6. Step 6: Final answer
    x = 66,105.30

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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.