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Finding the Fourth Proportional to 56,761.76, 85,161 and 37,078.80

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Solution

The fourth proportional to 56,761.76, 85,161 and 37,078.80 is: 55,630.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,761.76 : 85,161 = 37,078.80 : x
  2. Step 2: Convert to fraction form
    56,761.76/85,161 = 37,078.80/x
  3. Step 3: Cross multiply
    56,761.76x = 85,161 × 37,078.80
  4. Step 4: Simplify right side
    56,761.76x = 3,157,667,686.80
  5. Step 5: Solve for x
    x = 3,157,667,686.80/56,761.76
  6. Step 6: Final answer
    x = 55,630.19

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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.