Home / 51,127.20-76,690.80-45,586.80

Finding the Fourth Proportional to 51,127.20, 76,690.80 and 45,586.80

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Solution

The fourth proportional to 51,127.20, 76,690.80 and 45,586.80 is: 68,380.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,127.20 : 76,690.80 = 45,586.80 : x
  2. Step 2: Convert to fraction form
    51,127.20/76,690.80 = 45,586.80/x
  3. Step 3: Cross multiply
    51,127.20x = 76,690.80 × 45,586.80
  4. Step 4: Simplify right side
    51,127.20x = 3,496,088,161.44
  5. Step 5: Solve for x
    x = 3,496,088,161.44/51,127.20
  6. Step 6: Final answer
    x = 68,380.20

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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.