Home / 73,942.12-102,039.90-40,408.12

Finding the Fourth Proportional to 73,942.12, 102,039.90 and 40,408.12

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Solution

The fourth proportional to 73,942.12, 102,039.90 and 40,408.12 is: 55,763.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,942.12 : 102,039.90 = 40,408.12 : x
  2. Step 2: Convert to fraction form
    73,942.12/102,039.90 = 40,408.12/x
  3. Step 3: Cross multiply
    73,942.12x = 102,039.90 × 40,408.12
  4. Step 4: Simplify right side
    73,942.12x = 4,123,240,523.99
  5. Step 5: Solve for x
    x = 4,123,240,523.99/73,942.12
  6. Step 6: Final answer
    x = 55,763.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.