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Finding the Fourth Proportional to 49,286.90, 73,931.79 and 19,299.89

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Solution

The fourth proportional to 49,286.90, 73,931.79 and 19,299.89 is: 28,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,286.90 : 73,931.79 = 19,299.89 : x
  2. Step 2: Convert to fraction form
    49,286.90/73,931.79 = 19,299.89/x
  3. Step 3: Cross multiply
    49,286.90x = 73,931.79 × 19,299.89
  4. Step 4: Simplify right side
    49,286.90x = 1,426,875,414.50
  5. Step 5: Solve for x
    x = 1,426,875,414.50/49,286.90
  6. Step 6: Final answer
    x = 28,950.40

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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.