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Finding the Fourth Proportional to 52,794, 72,855.72 and 28,920.77

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Solution

The fourth proportional to 52,794, 72,855.72 and 28,920.77 is: 39,910.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,794 : 72,855.72 = 28,920.77 : x
  2. Step 2: Convert to fraction form
    52,794/72,855.72 = 28,920.77/x
  3. Step 3: Cross multiply
    52,794x = 72,855.72 × 28,920.77
  4. Step 4: Simplify right side
    52,794x = 2,107,043,430.23
  5. Step 5: Solve for x
    x = 2,107,043,430.23/52,794
  6. Step 6: Final answer
    x = 39,910.66

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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.