Home / 103,831.32-155,729.94-28,956.54

Finding the Fourth Proportional to 103,831.32, 155,729.94 and 28,956.54

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Solution

The fourth proportional to 103,831.32, 155,729.94 and 28,956.54 is: 43,430.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,831.32 : 155,729.94 = 28,956.54 : x
  2. Step 2: Convert to fraction form
    103,831.32/155,729.94 = 28,956.54/x
  3. Step 3: Cross multiply
    103,831.32x = 155,729.94 × 28,956.54
  4. Step 4: Simplify right side
    103,831.32x = 4,509,400,236.81
  5. Step 5: Solve for x
    x = 4,509,400,236.81/103,831.32
  6. Step 6: Final answer
    x = 43,430.06

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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.