Home / 70,043.03-105,065.26-20,123

Finding the Fourth Proportional to 70,043.03, 105,065.26 and 20,123

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Solution

The fourth proportional to 70,043.03, 105,065.26 and 20,123 is: 30,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,043.03 : 105,065.26 = 20,123 : x
  2. Step 2: Convert to fraction form
    70,043.03/105,065.26 = 20,123/x
  3. Step 3: Cross multiply
    70,043.03x = 105,065.26 × 20,123
  4. Step 4: Simplify right side
    70,043.03x = 2,114,228,226.98
  5. Step 5: Solve for x
    x = 2,114,228,226.98/70,043.03
  6. Step 6: Final answer
    x = 30,184.71

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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.