Home / 48,129.20-72,172.20-18,537.20

Finding the Fourth Proportional to 48,129.20, 72,172.20 and 18,537.20

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Solution

The fourth proportional to 48,129.20, 72,172.20 and 18,537.20 is: 27,797.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,129.20 : 72,172.20 = 18,537.20 : x
  2. Step 2: Convert to fraction form
    48,129.20/72,172.20 = 18,537.20/x
  3. Step 3: Cross multiply
    48,129.20x = 72,172.20 × 18,537.20
  4. Step 4: Simplify right side
    48,129.20x = 1,337,870,505.84
  5. Step 5: Solve for x
    x = 1,337,870,505.84/48,129.20
  6. Step 6: Final answer
    x = 27,797.48

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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.