Home / 48,121.20-72,160.20-18,529.20

Finding the Fourth Proportional to 48,121.20, 72,160.20 and 18,529.20

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Solution

The fourth proportional to 48,121.20, 72,160.20 and 18,529.20 is: 27,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,121.20 : 72,160.20 = 18,529.20 : x
  2. Step 2: Convert to fraction form
    48,121.20/72,160.20 = 18,529.20/x
  3. Step 3: Cross multiply
    48,121.20x = 72,160.20 × 18,529.20
  4. Step 4: Simplify right side
    48,121.20x = 1,337,070,777.84
  5. Step 5: Solve for x
    x = 1,337,070,777.84/48,121.20
  6. Step 6: Final answer
    x = 27,785.48

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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.