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Finding the Fourth Proportional to 81,258.48, 121,883.76 and 27,955.74

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Solution

The fourth proportional to 81,258.48, 121,883.76 and 27,955.74 is: 41,932.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.48 : 121,883.76 = 27,955.74 : x
  2. Step 2: Convert to fraction form
    81,258.48/121,883.76 = 27,955.74/x
  3. Step 3: Cross multiply
    81,258.48x = 121,883.76 × 27,955.74
  4. Step 4: Simplify right side
    81,258.48x = 3,407,350,704.78
  5. Step 5: Solve for x
    x = 3,407,350,704.78/81,258.48
  6. Step 6: Final answer
    x = 41,932.25

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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.