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Finding the Fourth Proportional to 52,809.33, 72,876.87 and 28,936.08

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Solution

The fourth proportional to 52,809.33, 72,876.87 and 28,936.08 is: 39,931.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,809.33 : 72,876.87 = 28,936.08 : x
  2. Step 2: Convert to fraction form
    52,809.33/72,876.87 = 28,936.08/x
  3. Step 3: Cross multiply
    52,809.33x = 72,876.87 × 28,936.08
  4. Step 4: Simplify right side
    52,809.33x = 2,108,770,940.47
  5. Step 5: Solve for x
    x = 2,108,770,940.47/52,809.33
  6. Step 6: Final answer
    x = 39,931.79

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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.