Home / 51,081.40-76,679.70-39,446.20

Finding the Fourth Proportional to 51,081.40, 76,679.70 and 39,446.20

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Solution

The fourth proportional to 51,081.40, 76,679.70 and 39,446.20 is: 59,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,081.40 : 76,679.70 = 39,446.20 : x
  2. Step 2: Convert to fraction form
    51,081.40/76,679.70 = 39,446.20/x
  3. Step 3: Cross multiply
    51,081.40x = 76,679.70 × 39,446.20
  4. Step 4: Simplify right side
    51,081.40x = 3,024,722,782.14
  5. Step 5: Solve for x
    x = 3,024,722,782.14/51,081.40
  6. Step 6: Final answer
    x = 59,213.78

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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.