Home / 80,831.23-121,217.65-34,087.75

Finding the Fourth Proportional to 80,831.23, 121,217.65 and 34,087.75

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Solution

The fourth proportional to 80,831.23, 121,217.65 and 34,087.75 is: 51,119.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.23 : 121,217.65 = 34,087.75 : x
  2. Step 2: Convert to fraction form
    80,831.23/121,217.65 = 34,087.75/x
  3. Step 3: Cross multiply
    80,831.23x = 121,217.65 × 34,087.75
  4. Step 4: Simplify right side
    80,831.23x = 4,132,036,560.52
  5. Step 5: Solve for x
    x = 4,132,036,560.52/80,831.23
  6. Step 6: Final answer
    x = 51,119.31

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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.