Home / 70,083.23-105,121.13-20,162.79

Finding the Fourth Proportional to 70,083.23, 105,121.13 and 20,162.79

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Solution

The fourth proportional to 70,083.23, 105,121.13 and 20,162.79 is: 30,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,083.23 : 105,121.13 = 20,162.79 : x
  2. Step 2: Convert to fraction form
    70,083.23/105,121.13 = 20,162.79/x
  3. Step 3: Cross multiply
    70,083.23x = 105,121.13 × 20,162.79
  4. Step 4: Simplify right side
    70,083.23x = 2,119,535,167.94
  5. Step 5: Solve for x
    x = 2,119,535,167.94/70,083.23
  6. Step 6: Final answer
    x = 30,243.12

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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.