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Finding the Fourth Proportional to 55,151.64, 82,727.70 and 20,091.30

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Solution

The fourth proportional to 55,151.64, 82,727.70 and 20,091.30 is: 30,137.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,151.64 : 82,727.70 = 20,091.30 : x
  2. Step 2: Convert to fraction form
    55,151.64/82,727.70 = 20,091.30/x
  3. Step 3: Cross multiply
    55,151.64x = 82,727.70 × 20,091.30
  4. Step 4: Simplify right side
    55,151.64x = 1,662,107,039.01
  5. Step 5: Solve for x
    x = 1,662,107,039.01/55,151.64
  6. Step 6: Final answer
    x = 30,137.04

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1.5x scale

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.