Home / 83,438.41-115,145.12-45,198.38

Finding the Fourth Proportional to 83,438.41, 115,145.12 and 45,198.38

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Solution

The fourth proportional to 83,438.41, 115,145.12 and 45,198.38 is: 62,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,438.41 : 115,145.12 = 45,198.38 : x
  2. Step 2: Convert to fraction form
    83,438.41/115,145.12 = 45,198.38/x
  3. Step 3: Cross multiply
    83,438.41x = 115,145.12 × 45,198.38
  4. Step 4: Simplify right side
    83,438.41x = 5,204,372,888.91
  5. Step 5: Solve for x
    x = 5,204,372,888.91/83,438.41
  6. Step 6: Final answer
    x = 62,373.83

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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.