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Finding the Fourth Proportional to 48,262.80, 72,390.60 and 20,175.60

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Solution

The fourth proportional to 48,262.80, 72,390.60 and 20,175.60 is: 30,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,262.80 : 72,390.60 = 20,175.60 : x
  2. Step 2: Convert to fraction form
    48,262.80/72,390.60 = 20,175.60/x
  3. Step 3: Cross multiply
    48,262.80x = 72,390.60 × 20,175.60
  4. Step 4: Simplify right side
    48,262.80x = 1,460,523,789.36
  5. Step 5: Solve for x
    x = 1,460,523,789.36/48,262.80
  6. Step 6: Final answer
    x = 30,261.90

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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.