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Finding the Fourth Proportional to 52,756.94, 72,801.85 and 28,879.09

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Solution

The fourth proportional to 52,756.94, 72,801.85 and 28,879.09 is: 39,851.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,756.94 : 72,801.85 = 28,879.09 : x
  2. Step 2: Convert to fraction form
    52,756.94/72,801.85 = 28,879.09/x
  3. Step 3: Cross multiply
    52,756.94x = 72,801.85 × 28,879.09
  4. Step 4: Simplify right side
    52,756.94x = 2,102,450,669.91
  5. Step 5: Solve for x
    x = 2,102,450,669.91/52,756.94
  6. Step 6: Final answer
    x = 39,851.64

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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.