Home / 48,115.17-72,121.73-18,520.20

Finding the Fourth Proportional to 48,115.17, 72,121.73 and 18,520.20

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Solution

The fourth proportional to 48,115.17, 72,121.73 and 18,520.20 is: 27,760.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,115.17 : 72,121.73 = 18,520.20 : x
  2. Step 2: Convert to fraction form
    48,115.17/72,121.73 = 18,520.20/x
  3. Step 3: Cross multiply
    48,115.17x = 72,121.73 × 18,520.20
  4. Step 4: Simplify right side
    48,115.17x = 1,335,708,771.35
  5. Step 5: Solve for x
    x = 1,335,708,771.35/48,115.17
  6. Step 6: Final answer
    x = 27,760.66

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1.5x scale

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.