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Finding the Fourth Proportional to 51,351.96, 70,869.05 and 28,691.09

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Solution

The fourth proportional to 51,351.96, 70,869.05 and 28,691.09 is: 39,595.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,351.96 : 70,869.05 = 28,691.09 : x
  2. Step 2: Convert to fraction form
    51,351.96/70,869.05 = 28,691.09/x
  3. Step 3: Cross multiply
    51,351.96x = 70,869.05 × 28,691.09
  4. Step 4: Simplify right side
    51,351.96x = 2,033,309,793.96
  5. Step 5: Solve for x
    x = 2,033,309,793.96/51,351.96
  6. Step 6: Final answer
    x = 39,595.56

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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.