Home / 51,540.20-77,310.30-45,999.80

Finding the Fourth Proportional to 51,540.20, 77,310.30 and 45,999.80

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Solution

The fourth proportional to 51,540.20, 77,310.30 and 45,999.80 is: 68,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,540.20 : 77,310.30 = 45,999.80 : x
  2. Step 2: Convert to fraction form
    51,540.20/77,310.30 = 45,999.80/x
  3. Step 3: Cross multiply
    51,540.20x = 77,310.30 × 45,999.80
  4. Step 4: Simplify right side
    51,540.20x = 3,556,258,337.94
  5. Step 5: Solve for x
    x = 3,556,258,337.94/51,540.20
  6. Step 6: Final answer
    x = 68,999.70

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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.