Home / 55,279.20-82,821.60-45,364.80

Finding the Fourth Proportional to 55,279.20, 82,821.60 and 45,364.80

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Solution

The fourth proportional to 55,279.20, 82,821.60 and 45,364.80 is: 67,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,279.20 : 82,821.60 = 45,364.80 : x
  2. Step 2: Convert to fraction form
    55,279.20/82,821.60 = 45,364.80/x
  3. Step 3: Cross multiply
    55,279.20x = 82,821.60 × 45,364.80
  4. Step 4: Simplify right side
    55,279.20x = 3,757,185,319.68
  5. Step 5: Solve for x
    x = 3,757,185,319.68/55,279.20
  6. Step 6: Final answer
    x = 67,967.43

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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.