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Finding the Fourth Proportional to 49,951.04, 74,919 and 18,779

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Solution

The fourth proportional to 49,951.04, 74,919 and 18,779 is: 28,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,951.04 : 74,919 = 18,779 : x
  2. Step 2: Convert to fraction form
    49,951.04/74,919 = 18,779/x
  3. Step 3: Cross multiply
    49,951.04x = 74,919 × 18,779
  4. Step 4: Simplify right side
    49,951.04x = 1,406,903,901
  5. Step 5: Solve for x
    x = 1,406,903,901/49,951.04
  6. Step 6: Final answer
    x = 28,165.66

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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.