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Finding the Fourth Proportional to 74,512.70, 111,769.05 and 57,016.70

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Solution

The fourth proportional to 74,512.70, 111,769.05 and 57,016.70 is: 85,525.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,512.70 : 111,769.05 = 57,016.70 : x
  2. Step 2: Convert to fraction form
    74,512.70/111,769.05 = 57,016.70/x
  3. Step 3: Cross multiply
    74,512.70x = 111,769.05 × 57,016.70
  4. Step 4: Simplify right side
    74,512.70x = 6,372,702,393.14
  5. Step 5: Solve for x
    x = 6,372,702,393.14/74,512.70
  6. Step 6: Final answer
    x = 85,525.05

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Similar ratio
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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.