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Finding the Fourth Proportional to 52,793.25, 72,853.79 and 28,919.85

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Solution

The fourth proportional to 52,793.25, 72,853.79 and 28,919.85 is: 39,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,793.25 : 72,853.79 = 28,919.85 : x
  2. Step 2: Convert to fraction form
    52,793.25/72,853.79 = 28,919.85/x
  3. Step 3: Cross multiply
    52,793.25x = 72,853.79 × 28,919.85
  4. Step 4: Simplify right side
    52,793.25x = 2,106,920,534.13
  5. Step 5: Solve for x
    x = 2,106,920,534.13/52,793.25
  6. Step 6: Final answer
    x = 39,908.90

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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.