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Finding the Fourth Proportional to 57,955.96, 80,016.42 and 39,836.80

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Solution

The fourth proportional to 57,955.96, 80,016.42 and 39,836.80 is: 55,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,955.96 : 80,016.42 = 39,836.80 : x
  2. Step 2: Convert to fraction form
    57,955.96/80,016.42 = 39,836.80/x
  3. Step 3: Cross multiply
    57,955.96x = 80,016.42 × 39,836.80
  4. Step 4: Simplify right side
    57,955.96x = 3,187,598,120.26
  5. Step 5: Solve for x
    x = 3,187,598,120.26/57,955.96
  6. Step 6: Final answer
    x = 55,000.35

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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.