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Finding the Fourth Proportional to 45,819.80, 68,729.70 and 43,681.40

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Solution

The fourth proportional to 45,819.80, 68,729.70 and 43,681.40 is: 65,522.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,819.80 : 68,729.70 = 43,681.40 : x
  2. Step 2: Convert to fraction form
    45,819.80/68,729.70 = 43,681.40/x
  3. Step 3: Cross multiply
    45,819.80x = 68,729.70 × 43,681.40
  4. Step 4: Simplify right side
    45,819.80x = 3,002,209,517.58
  5. Step 5: Solve for x
    x = 3,002,209,517.58/45,819.80
  6. Step 6: Final answer
    x = 65,522.10

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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.