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Finding the Fourth Proportional to 90,612, 125,044.56 and 50,868

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Solution

The fourth proportional to 90,612, 125,044.56 and 50,868 is: 70,197.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,612 : 125,044.56 = 50,868 : x
  2. Step 2: Convert to fraction form
    90,612/125,044.56 = 50,868/x
  3. Step 3: Cross multiply
    90,612x = 125,044.56 × 50,868
  4. Step 4: Simplify right side
    90,612x = 6,360,766,678.08
  5. Step 5: Solve for x
    x = 6,360,766,678.08/90,612
  6. Step 6: Final answer
    x = 70,197.84

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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.