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Finding the Fourth Proportional to 84,195.92, 126,285.24 and 52,936.40

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Solution

The fourth proportional to 84,195.92, 126,285.24 and 52,936.40 is: 79,399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,195.92 : 126,285.24 = 52,936.40 : x
  2. Step 2: Convert to fraction form
    84,195.92/126,285.24 = 52,936.40/x
  3. Step 3: Cross multiply
    84,195.92x = 126,285.24 × 52,936.40
  4. Step 4: Simplify right side
    84,195.92x = 6,685,085,978.74
  5. Step 5: Solve for x
    x = 6,685,085,978.74/84,195.92
  6. Step 6: Final answer
    x = 79,399.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.