Home / 79,515.63-119,278.92-20,351.82

Finding the Fourth Proportional to 79,515.63, 119,278.92 and 20,351.82

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Solution

The fourth proportional to 79,515.63, 119,278.92 and 20,351.82 is: 30,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.63 : 119,278.92 = 20,351.82 : x
  2. Step 2: Convert to fraction form
    79,515.63/119,278.92 = 20,351.82/x
  3. Step 3: Cross multiply
    79,515.63x = 119,278.92 × 20,351.82
  4. Step 4: Simplify right side
    79,515.63x = 2,427,543,109.63
  5. Step 5: Solve for x
    x = 2,427,543,109.63/79,515.63
  6. Step 6: Final answer
    x = 30,529.13

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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.