Home / 80,831.80-121,190.10-30,892.60

Finding the Fourth Proportional to 80,831.80, 121,190.10 and 30,892.60

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Solution

The fourth proportional to 80,831.80, 121,190.10 and 30,892.60 is: 46,316.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,831.80 : 121,190.10 = 30,892.60 : x
  2. Step 2: Convert to fraction form
    80,831.80/121,190.10 = 30,892.60/x
  3. Step 3: Cross multiply
    80,831.80x = 121,190.10 × 30,892.60
  4. Step 4: Simplify right side
    80,831.80x = 3,743,877,283.26
  5. Step 5: Solve for x
    x = 3,743,877,283.26/80,831.80
  6. Step 6: Final answer
    x = 46,316.89

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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.