Home / 82,529.12-123,768.68-31,919.11

Finding the Fourth Proportional to 82,529.12, 123,768.68 and 31,919.11

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Solution

The fourth proportional to 82,529.12, 123,768.68 and 31,919.11 is: 47,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,529.12 : 123,768.68 = 31,919.11 : x
  2. Step 2: Convert to fraction form
    82,529.12/123,768.68 = 31,919.11/x
  3. Step 3: Cross multiply
    82,529.12x = 123,768.68 × 31,919.11
  4. Step 4: Simplify right side
    82,529.12x = 3,950,585,642.46
  5. Step 5: Solve for x
    x = 3,950,585,642.46/82,529.12
  6. Step 6: Final answer
    x = 47,868.99

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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.