Home / 51,842.88-77,764.19-20,700

Finding the Fourth Proportional to 51,842.88, 77,764.19 and 20,700

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Solution

The fourth proportional to 51,842.88, 77,764.19 and 20,700 is: 31,049.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,842.88 : 77,764.19 = 20,700 : x
  2. Step 2: Convert to fraction form
    51,842.88/77,764.19 = 20,700/x
  3. Step 3: Cross multiply
    51,842.88x = 77,764.19 × 20,700
  4. Step 4: Simplify right side
    51,842.88x = 1,609,718,629.50
  5. Step 5: Solve for x
    x = 1,609,718,629.50/51,842.88
  6. Step 6: Final answer
    x = 31,049.95

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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.