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Finding the Fourth Proportional to 55,280.68, 82,921.02 and 20,201.20

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Solution

The fourth proportional to 55,280.68, 82,921.02 and 20,201.20 is: 30,301.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,280.68 : 82,921.02 = 20,201.20 : x
  2. Step 2: Convert to fraction form
    55,280.68/82,921.02 = 20,201.20/x
  3. Step 3: Cross multiply
    55,280.68x = 82,921.02 × 20,201.20
  4. Step 4: Simplify right side
    55,280.68x = 1,675,104,109.22
  5. Step 5: Solve for x
    x = 1,675,104,109.22/55,280.68
  6. Step 6: Final answer
    x = 30,301.80

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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.