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Finding the Fourth Proportional to 57,270.28, 79,016.80 and 37,128

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Solution

The fourth proportional to 57,270.28, 79,016.80 and 37,128 is: 51,226.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,270.28 : 79,016.80 = 37,128 : x
  2. Step 2: Convert to fraction form
    57,270.28/79,016.80 = 37,128/x
  3. Step 3: Cross multiply
    57,270.28x = 79,016.80 × 37,128
  4. Step 4: Simplify right side
    57,270.28x = 2,933,735,750.40
  5. Step 5: Solve for x
    x = 2,933,735,750.40/57,270.28
  6. Step 6: Final answer
    x = 51,226.15

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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.