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Finding the Fourth Proportional to 54,955.56, 75,831.78 and 30,755.88

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Solution

The fourth proportional to 54,955.56, 75,831.78 and 30,755.88 is: 42,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,955.56 : 75,831.78 = 30,755.88 : x
  2. Step 2: Convert to fraction form
    54,955.56/75,831.78 = 30,755.88/x
  3. Step 3: Cross multiply
    54,955.56x = 75,831.78 × 30,755.88
  4. Step 4: Simplify right side
    54,955.56x = 2,332,273,125.87
  5. Step 5: Solve for x
    x = 2,332,273,125.87/54,955.56
  6. Step 6: Final answer
    x = 42,439.26

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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.