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Finding the Fourth Proportional to 52,768.40, 72,819.40 and 28,894.64

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Solution

The fourth proportional to 52,768.40, 72,819.40 and 28,894.64 is: 39,874.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,768.40 : 72,819.40 = 28,894.64 : x
  2. Step 2: Convert to fraction form
    52,768.40/72,819.40 = 28,894.64/x
  3. Step 3: Cross multiply
    52,768.40x = 72,819.40 × 28,894.64
  4. Step 4: Simplify right side
    52,768.40x = 2,104,090,348.02
  5. Step 5: Solve for x
    x = 2,104,090,348.02/52,768.40
  6. Step 6: Final answer
    x = 39,874.06

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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.