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Finding the Fourth Proportional to 55,201.20, 82,801.80 and 48,640.20

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Solution

The fourth proportional to 55,201.20, 82,801.80 and 48,640.20 is: 72,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,201.20 : 82,801.80 = 48,640.20 : x
  2. Step 2: Convert to fraction form
    55,201.20/82,801.80 = 48,640.20/x
  3. Step 3: Cross multiply
    55,201.20x = 82,801.80 × 48,640.20
  4. Step 4: Simplify right side
    55,201.20x = 4,027,496,112.36
  5. Step 5: Solve for x
    x = 4,027,496,112.36/55,201.20
  6. Step 6: Final answer
    x = 72,960.30

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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.