Home / 51,213.40-76,820.10-31,427.80

Finding the Fourth Proportional to 51,213.40, 76,820.10 and 31,427.80

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Solution

The fourth proportional to 51,213.40, 76,820.10 and 31,427.80 is: 47,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,213.40 : 76,820.10 = 31,427.80 : x
  2. Step 2: Convert to fraction form
    51,213.40/76,820.10 = 31,427.80/x
  3. Step 3: Cross multiply
    51,213.40x = 76,820.10 × 31,427.80
  4. Step 4: Simplify right side
    51,213.40x = 2,414,286,738.78
  5. Step 5: Solve for x
    x = 2,414,286,738.78/51,213.40
  6. Step 6: Final answer
    x = 47,141.70

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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.