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Finding the Fourth Proportional to 55,443.80, 83,165.70 and 54,860.60

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Solution

The fourth proportional to 55,443.80, 83,165.70 and 54,860.60 is: 82,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,443.80 : 83,165.70 = 54,860.60 : x
  2. Step 2: Convert to fraction form
    55,443.80/83,165.70 = 54,860.60/x
  3. Step 3: Cross multiply
    55,443.80x = 83,165.70 × 54,860.60
  4. Step 4: Simplify right side
    55,443.80x = 4,562,520,201.42
  5. Step 5: Solve for x
    x = 4,562,520,201.42/55,443.80
  6. Step 6: Final answer
    x = 82,290.90

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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.