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Finding the Fourth Proportional to 55,205.80, 82,905.90 and 53,456.20

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Solution

The fourth proportional to 55,205.80, 82,905.90 and 53,456.20 is: 80,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,205.80 : 82,905.90 = 53,456.20 : x
  2. Step 2: Convert to fraction form
    55,205.80/82,905.90 = 53,456.20/x
  3. Step 3: Cross multiply
    55,205.80x = 82,905.90 × 53,456.20
  4. Step 4: Simplify right side
    55,205.80x = 4,431,834,371.58
  5. Step 5: Solve for x
    x = 4,431,834,371.58/55,205.80
  6. Step 6: Final answer
    x = 80,278.42

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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.