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Finding the Fourth Proportional to 52,653.78, 72,662.04 and 28,780.44

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Solution

The fourth proportional to 52,653.78, 72,662.04 and 28,780.44 is: 39,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,653.78 : 72,662.04 = 28,780.44 : x
  2. Step 2: Convert to fraction form
    52,653.78/72,662.04 = 28,780.44/x
  3. Step 3: Cross multiply
    52,653.78x = 72,662.04 × 28,780.44
  4. Step 4: Simplify right side
    52,653.78x = 2,091,245,482.50
  5. Step 5: Solve for x
    x = 2,091,245,482.50/52,653.78
  6. Step 6: Final answer
    x = 39,716.91

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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.