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Finding the Fourth Proportional to 49,882.40, 74,786.40 and 30,156.80

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Solution

The fourth proportional to 49,882.40, 74,786.40 and 30,156.80 is: 45,212.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,882.40 : 74,786.40 = 30,156.80 : x
  2. Step 2: Convert to fraction form
    49,882.40/74,786.40 = 30,156.80/x
  3. Step 3: Cross multiply
    49,882.40x = 74,786.40 × 30,156.80
  4. Step 4: Simplify right side
    49,882.40x = 2,255,318,507.52
  5. Step 5: Solve for x
    x = 2,255,318,507.52/49,882.40
  6. Step 6: Final answer
    x = 45,212.71

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1.5x scale

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.