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Finding the Fourth Proportional to 55,279.68, 82,919.52 and 20,200.20

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Solution

The fourth proportional to 55,279.68, 82,919.52 and 20,200.20 is: 30,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.68 : 82,919.52 = 20,200.20 : x
  2. Step 2: Convert to fraction form
    55,279.68/82,919.52 = 20,200.20/x
  3. Step 3: Cross multiply
    55,279.68x = 82,919.52 × 20,200.20
  4. Step 4: Simplify right side
    55,279.68x = 1,674,990,887.90
  5. Step 5: Solve for x
    x = 1,674,990,887.90/55,279.68
  6. Step 6: Final answer
    x = 30,300.30

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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.