Home / 49,082-67,732.40-28,939.72

Finding the Fourth Proportional to 49,082, 67,732.40 and 28,939.72

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Solution

The fourth proportional to 49,082, 67,732.40 and 28,939.72 is: 39,936.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,082 : 67,732.40 = 28,939.72 : x
  2. Step 2: Convert to fraction form
    49,082/67,732.40 = 28,939.72/x
  3. Step 3: Cross multiply
    49,082x = 67,732.40 × 28,939.72
  4. Step 4: Simplify right side
    49,082x = 1,960,156,690.93
  5. Step 5: Solve for x
    x = 1,960,156,690.93/49,082
  6. Step 6: Final answer
    x = 39,936.37

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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.