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Finding the Fourth Proportional to 91,673.92, 126,509.83 and 55,864

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Solution

The fourth proportional to 91,673.92, 126,509.83 and 55,864 is: 77,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,673.92 : 126,509.83 = 55,864 : x
  2. Step 2: Convert to fraction form
    91,673.92/126,509.83 = 55,864/x
  3. Step 3: Cross multiply
    91,673.92x = 126,509.83 × 55,864
  4. Step 4: Simplify right side
    91,673.92x = 7,067,345,143.12
  5. Step 5: Solve for x
    x = 7,067,345,143.12/91,673.92
  6. Step 6: Final answer
    x = 77,092.21

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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.