Home / 53,902.20-80,853.30-40,780.20

Finding the Fourth Proportional to 53,902.20, 80,853.30 and 40,780.20

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Solution

The fourth proportional to 53,902.20, 80,853.30 and 40,780.20 is: 61,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,902.20 : 80,853.30 = 40,780.20 : x
  2. Step 2: Convert to fraction form
    53,902.20/80,853.30 = 40,780.20/x
  3. Step 3: Cross multiply
    53,902.20x = 80,853.30 × 40,780.20
  4. Step 4: Simplify right side
    53,902.20x = 3,297,213,744.66
  5. Step 5: Solve for x
    x = 3,297,213,744.66/53,902.20
  6. Step 6: Final answer
    x = 61,170.30

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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.