Home / 71,831.67-107,747.42-19,239.72

Finding the Fourth Proportional to 71,831.67, 107,747.42 and 19,239.72

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Solution

The fourth proportional to 71,831.67, 107,747.42 and 19,239.72 is: 28,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,831.67 : 107,747.42 = 19,239.72 : x
  2. Step 2: Convert to fraction form
    71,831.67/107,747.42 = 19,239.72/x
  3. Step 3: Cross multiply
    71,831.67x = 107,747.42 × 19,239.72
  4. Step 4: Simplify right side
    71,831.67x = 2,073,030,191.52
  5. Step 5: Solve for x
    x = 2,073,030,191.52/71,831.67
  6. Step 6: Final answer
    x = 28,859.56

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1.5x scale

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.