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Finding the Fourth Proportional to 57,743.80, 86,615.70 and 40,029.10

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Solution

The fourth proportional to 57,743.80, 86,615.70 and 40,029.10 is: 60,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,743.80 : 86,615.70 = 40,029.10 : x
  2. Step 2: Convert to fraction form
    57,743.80/86,615.70 = 40,029.10/x
  3. Step 3: Cross multiply
    57,743.80x = 86,615.70 × 40,029.10
  4. Step 4: Simplify right side
    57,743.80x = 3,467,148,516.87
  5. Step 5: Solve for x
    x = 3,467,148,516.87/57,743.80
  6. Step 6: Final answer
    x = 60,043.65

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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.