Home / 90,831.20-125,350.68-55,001

Finding the Fourth Proportional to 90,831.20, 125,350.68 and 55,001

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Solution

The fourth proportional to 90,831.20, 125,350.68 and 55,001 is: 75,903.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.20 : 125,350.68 = 55,001 : x
  2. Step 2: Convert to fraction form
    90,831.20/125,350.68 = 55,001/x
  3. Step 3: Cross multiply
    90,831.20x = 125,350.68 × 55,001
  4. Step 4: Simplify right side
    90,831.20x = 6,894,412,750.68
  5. Step 5: Solve for x
    x = 6,894,412,750.68/90,831.20
  6. Step 6: Final answer
    x = 75,903.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.