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Finding the Fourth Proportional to 55,201.42, 82,815.90 and 25,640.20

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Solution

The fourth proportional to 55,201.42, 82,815.90 and 25,640.20 is: 38,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,201.42 : 82,815.90 = 25,640.20 : x
  2. Step 2: Convert to fraction form
    55,201.42/82,815.90 = 25,640.20/x
  3. Step 3: Cross multiply
    55,201.42x = 82,815.90 × 25,640.20
  4. Step 4: Simplify right side
    55,201.42x = 2,123,416,239.18
  5. Step 5: Solve for x
    x = 2,123,416,239.18/55,201.42
  6. Step 6: Final answer
    x = 38,466.70

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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.