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Finding the Fourth Proportional to 55,728.59, 76,910.85 and 31,850.71

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Solution

The fourth proportional to 55,728.59, 76,910.85 and 31,850.71 is: 43,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,728.59 : 76,910.85 = 31,850.71 : x
  2. Step 2: Convert to fraction form
    55,728.59/76,910.85 = 31,850.71/x
  3. Step 3: Cross multiply
    55,728.59x = 76,910.85 × 31,850.71
  4. Step 4: Simplify right side
    55,728.59x = 2,449,664,986.93
  5. Step 5: Solve for x
    x = 2,449,664,986.93/55,728.59
  6. Step 6: Final answer
    x = 43,957.06

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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.