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Finding the Fourth Proportional to 45,420.80, 68,104.20 and 27,903.20

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Solution

The fourth proportional to 45,420.80, 68,104.20 and 27,903.20 is: 41,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.80 : 68,104.20 = 27,903.20 : x
  2. Step 2: Convert to fraction form
    45,420.80/68,104.20 = 27,903.20/x
  3. Step 3: Cross multiply
    45,420.80x = 68,104.20 × 27,903.20
  4. Step 4: Simplify right side
    45,420.80x = 1,900,325,113.44
  5. Step 5: Solve for x
    x = 1,900,325,113.44/45,420.80
  6. Step 6: Final answer
    x = 41,838.21

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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.