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Finding the Fourth Proportional to 52,793.76, 72,855.40 and 28,920.88

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Solution

The fourth proportional to 52,793.76, 72,855.40 and 28,920.88 is: 39,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,793.76 : 72,855.40 = 28,920.88 : x
  2. Step 2: Convert to fraction form
    52,793.76/72,855.40 = 28,920.88/x
  3. Step 3: Cross multiply
    52,793.76x = 72,855.40 × 28,920.88
  4. Step 4: Simplify right side
    52,793.76x = 2,107,042,280.75
  5. Step 5: Solve for x
    x = 2,107,042,280.75/52,793.76
  6. Step 6: Final answer
    x = 39,910.82

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1.5x scale

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.