Home / 51,742.56-77,614.32-20,585.76

Finding the Fourth Proportional to 51,742.56, 77,614.32 and 20,585.76

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Solution

The fourth proportional to 51,742.56, 77,614.32 and 20,585.76 is: 30,878.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,742.56 : 77,614.32 = 20,585.76 : x
  2. Step 2: Convert to fraction form
    51,742.56/77,614.32 = 20,585.76/x
  3. Step 3: Cross multiply
    51,742.56x = 77,614.32 × 20,585.76
  4. Step 4: Simplify right side
    51,742.56x = 1,597,749,764.08
  5. Step 5: Solve for x
    x = 1,597,749,764.08/51,742.56
  6. Step 6: Final answer
    x = 30,878.83

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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.