Home / 51,279.20-76,951.20-30,219.20

Finding the Fourth Proportional to 51,279.20, 76,951.20 and 30,219.20

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Solution

The fourth proportional to 51,279.20, 76,951.20 and 30,219.20 is: 45,347.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,279.20 : 76,951.20 = 30,219.20 : x
  2. Step 2: Convert to fraction form
    51,279.20/76,951.20 = 30,219.20/x
  3. Step 3: Cross multiply
    51,279.20x = 76,951.20 × 30,219.20
  4. Step 4: Simplify right side
    51,279.20x = 2,325,403,703.04
  5. Step 5: Solve for x
    x = 2,325,403,703.04/51,279.20
  6. Step 6: Final answer
    x = 45,347.89

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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.