Home / 53,619.90-80,414.18-20,315.94

Finding the Fourth Proportional to 53,619.90, 80,414.18 and 20,315.94

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Solution

The fourth proportional to 53,619.90, 80,414.18 and 20,315.94 is: 30,467.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,619.90 : 80,414.18 = 20,315.94 : x
  2. Step 2: Convert to fraction form
    53,619.90/80,414.18 = 20,315.94/x
  3. Step 3: Cross multiply
    53,619.90x = 80,414.18 × 20,315.94
  4. Step 4: Simplify right side
    53,619.90x = 1,633,689,656.03
  5. Step 5: Solve for x
    x = 1,633,689,656.03/53,619.90
  6. Step 6: Final answer
    x = 30,467.97

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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.