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Finding the Fourth Proportional to 84,080.80, 115,991.92 and 50,069.92

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Solution

The fourth proportional to 84,080.80, 115,991.92 and 50,069.92 is: 69,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,080.80 : 115,991.92 = 50,069.92 : x
  2. Step 2: Convert to fraction form
    84,080.80/115,991.92 = 50,069.92/x
  3. Step 3: Cross multiply
    84,080.80x = 115,991.92 × 50,069.92
  4. Step 4: Simplify right side
    84,080.80x = 5,807,706,155.05
  5. Step 5: Solve for x
    x = 5,807,706,155.05/84,080.80
  6. Step 6: Final answer
    x = 69,072.92

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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.