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Finding the Fourth Proportional to 56,859.21, 85,288.41 and 14,739.21

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Solution

The fourth proportional to 56,859.21, 85,288.41 and 14,739.21 is: 22,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,859.21 : 85,288.41 = 14,739.21 : x
  2. Step 2: Convert to fraction form
    56,859.21/85,288.41 = 14,739.21/x
  3. Step 3: Cross multiply
    56,859.21x = 85,288.41 × 14,739.21
  4. Step 4: Simplify right side
    56,859.21x = 1,257,083,785.56
  5. Step 5: Solve for x
    x = 1,257,083,785.56/56,859.21
  6. Step 6: Final answer
    x = 22,108.71

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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.