Home / 51,137.56-76,716.80-21,555.40

Finding the Fourth Proportional to 51,137.56, 76,716.80 and 21,555.40

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Solution

The fourth proportional to 51,137.56, 76,716.80 and 21,555.40 is: 32,337.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,137.56 : 76,716.80 = 21,555.40 : x
  2. Step 2: Convert to fraction form
    51,137.56/76,716.80 = 21,555.40/x
  3. Step 3: Cross multiply
    51,137.56x = 76,716.80 × 21,555.40
  4. Step 4: Simplify right side
    51,137.56x = 1,653,661,310.72
  5. Step 5: Solve for x
    x = 1,653,661,310.72/51,137.56
  6. Step 6: Final answer
    x = 32,337.51

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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.