Home / 72,831.44-109,242.28-20,239.76

Finding the Fourth Proportional to 72,831.44, 109,242.28 and 20,239.76

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Solution

The fourth proportional to 72,831.44, 109,242.28 and 20,239.76 is: 30,358.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,831.44 : 109,242.28 = 20,239.76 : x
  2. Step 2: Convert to fraction form
    72,831.44/109,242.28 = 20,239.76/x
  3. Step 3: Cross multiply
    72,831.44x = 109,242.28 × 20,239.76
  4. Step 4: Simplify right side
    72,831.44x = 2,211,037,529.05
  5. Step 5: Solve for x
    x = 2,211,037,529.05/72,831.44
  6. Step 6: Final answer
    x = 30,358.28

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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.