Home / 51,213.20-76,819.80-40,845.20

Finding the Fourth Proportional to 51,213.20, 76,819.80 and 40,845.20

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Solution

The fourth proportional to 51,213.20, 76,819.80 and 40,845.20 is: 61,267.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,213.20 : 76,819.80 = 40,845.20 : x
  2. Step 2: Convert to fraction form
    51,213.20/76,819.80 = 40,845.20/x
  3. Step 3: Cross multiply
    51,213.20x = 76,819.80 × 40,845.20
  4. Step 4: Simplify right side
    51,213.20x = 3,137,720,094.96
  5. Step 5: Solve for x
    x = 3,137,720,094.96/51,213.20
  6. Step 6: Final answer
    x = 61,267.80

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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.