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Finding the Fourth Proportional to 50,139, 75,208.50 and 15,078.69

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Solution

The fourth proportional to 50,139, 75,208.50 and 15,078.69 is: 22,618.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,139 : 75,208.50 = 15,078.69 : x
  2. Step 2: Convert to fraction form
    50,139/75,208.50 = 15,078.69/x
  3. Step 3: Cross multiply
    50,139x = 75,208.50 × 15,078.69
  4. Step 4: Simplify right side
    50,139x = 1,134,045,656.87
  5. Step 5: Solve for x
    x = 1,134,045,656.87/50,139
  6. Step 6: Final answer
    x = 22,618.04

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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.