Home / 107,728.11-161,609.70-31,834.35

Finding the Fourth Proportional to 107,728.11, 161,609.70 and 31,834.35

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Solution

The fourth proportional to 107,728.11, 161,609.70 and 31,834.35 is: 47,756.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,728.11 : 161,609.70 = 31,834.35 : x
  2. Step 2: Convert to fraction form
    107,728.11/161,609.70 = 31,834.35/x
  3. Step 3: Cross multiply
    107,728.11x = 161,609.70 × 31,834.35
  4. Step 4: Simplify right side
    107,728.11x = 5,144,739,753.20
  5. Step 5: Solve for x
    x = 5,144,739,753.20/107,728.11
  6. Step 6: Final answer
    x = 47,756.71

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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.