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Finding the Fourth Proportional to 52,791.32, 72,852.04 and 28,918.85

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Solution

The fourth proportional to 52,791.32, 72,852.04 and 28,918.85 is: 39,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,791.32 : 72,852.04 = 28,918.85 : x
  2. Step 2: Convert to fraction form
    52,791.32/72,852.04 = 28,918.85/x
  3. Step 3: Cross multiply
    52,791.32x = 72,852.04 × 28,918.85
  4. Step 4: Simplify right side
    52,791.32x = 2,106,797,072.36
  5. Step 5: Solve for x
    x = 2,106,797,072.36/52,791.32
  6. Step 6: Final answer
    x = 39,908.02

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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.