Home / 80,831.58-121,262.04-33,420.92

Finding the Fourth Proportional to 80,831.58, 121,262.04 and 33,420.92

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Solution

The fourth proportional to 80,831.58, 121,262.04 and 33,420.92 is: 50,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.58 : 121,262.04 = 33,420.92 : x
  2. Step 2: Convert to fraction form
    80,831.58/121,262.04 = 33,420.92/x
  3. Step 3: Cross multiply
    80,831.58x = 121,262.04 × 33,420.92
  4. Step 4: Simplify right side
    80,831.58x = 4,052,688,937.88
  5. Step 5: Solve for x
    x = 4,052,688,937.88/80,831.58
  6. Step 6: Final answer
    x = 50,137.45

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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.