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Finding the Fourth Proportional to 87,813.92, 121,171.92 and 50,085.92

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Solution

The fourth proportional to 87,813.92, 121,171.92 and 50,085.92 is: 69,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,813.92 : 121,171.92 = 50,085.92 : x
  2. Step 2: Convert to fraction form
    87,813.92/121,171.92 = 50,085.92/x
  3. Step 3: Cross multiply
    87,813.92x = 121,171.92 × 50,085.92
  4. Step 4: Simplify right side
    87,813.92x = 6,069,007,091.37
  5. Step 5: Solve for x
    x = 6,069,007,091.37/87,813.92
  6. Step 6: Final answer
    x = 69,112.13

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1.5x scale

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.