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Finding the Fourth Proportional to 52,793.70, 72,855.32 and 28,921.23

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Solution

The fourth proportional to 52,793.70, 72,855.32 and 28,921.23 is: 39,911.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,793.70 : 72,855.32 = 28,921.23 : x
  2. Step 2: Convert to fraction form
    52,793.70/72,855.32 = 28,921.23/x
  3. Step 3: Cross multiply
    52,793.70x = 72,855.32 × 28,921.23
  4. Step 4: Simplify right side
    52,793.70x = 2,107,065,466.44
  5. Step 5: Solve for x
    x = 2,107,065,466.44/52,793.70
  6. Step 6: Final answer
    x = 39,911.31

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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.