Home / 48,135.05-72,172.50-18,517.60

Finding the Fourth Proportional to 48,135.05, 72,172.50 and 18,517.60

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Solution

The fourth proportional to 48,135.05, 72,172.50 and 18,517.60 is: 27,764.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,135.05 : 72,172.50 = 18,517.60 : x
  2. Step 2: Convert to fraction form
    48,135.05/72,172.50 = 18,517.60/x
  3. Step 3: Cross multiply
    48,135.05x = 72,172.50 × 18,517.60
  4. Step 4: Simplify right side
    48,135.05x = 1,336,461,486
  5. Step 5: Solve for x
    x = 1,336,461,486/48,135.05
  6. Step 6: Final answer
    x = 27,764.83

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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.