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Finding the Fourth Proportional to 45,371.60, 68,008.80 and 17,280.80

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Solution

The fourth proportional to 45,371.60, 68,008.80 and 17,280.80 is: 25,902.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,371.60 : 68,008.80 = 17,280.80 : x
  2. Step 2: Convert to fraction form
    45,371.60/68,008.80 = 17,280.80/x
  3. Step 3: Cross multiply
    45,371.60x = 68,008.80 × 17,280.80
  4. Step 4: Simplify right side
    45,371.60x = 1,175,246,471.04
  5. Step 5: Solve for x
    x = 1,175,246,471.04/45,371.60
  6. Step 6: Final answer
    x = 25,902.69

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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.