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Finding the Fourth Proportional to 79,831.64, 110,163.60 and 45,375.45

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Solution

The fourth proportional to 79,831.64, 110,163.60 and 45,375.45 is: 62,615.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,831.64 : 110,163.60 = 45,375.45 : x
  2. Step 2: Convert to fraction form
    79,831.64/110,163.60 = 45,375.45/x
  3. Step 3: Cross multiply
    79,831.64x = 110,163.60 × 45,375.45
  4. Step 4: Simplify right side
    79,831.64x = 4,998,722,923.62
  5. Step 5: Solve for x
    x = 4,998,722,923.62/79,831.64
  6. Step 6: Final answer
    x = 62,615.82

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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.