Home / 73,137.12-109,709.44-20,550.70

Finding the Fourth Proportional to 73,137.12, 109,709.44 and 20,550.70

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Solution

The fourth proportional to 73,137.12, 109,709.44 and 20,550.70 is: 30,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.12 : 109,709.44 = 20,550.70 : x
  2. Step 2: Convert to fraction form
    73,137.12/109,709.44 = 20,550.70/x
  3. Step 3: Cross multiply
    73,137.12x = 109,709.44 × 20,550.70
  4. Step 4: Simplify right side
    73,137.12x = 2,254,606,182.93
  5. Step 5: Solve for x
    x = 2,254,606,182.93/73,137.12
  6. Step 6: Final answer
    x = 30,827.11

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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.